More Whimsical OEIS Sequences

(jeremykun.com)

53 points | by surprisetalk 4 days ago ago

9 comments

  • robinhouston 2 days ago ago

    The edit history of the “nonsense sequence” makes for painful reading.

    https://oeis.org/history?seq=A133451&start=0&n=30

    • dooglius 2 days ago ago

      I am missing some context here what was wrong with the original description?

      • robinhouston 2 days ago ago

        The original title was this:

        > Graph substitution of two octahedra inside an icosahedron connected at p=1: disconnected at p=0 ( concept similar to two tetrahedra inside a cube).

        Can you explain what that means, and how it leads to a sequence of integers? I think it is nonsense.

  • tectec 3 days ago ago

    For the first mentioned sequences based on fonts, what's the first number in the sequence that has less digits than the previous number?

    • bradrn 3 days ago ago

      It looks like that never occurs for Helvetica (A316600) due to the absence of kerning. However, with Arial (A316599) the description notes:

      > a(29368) = 111111 is a first notable anomaly, because its bounding box width of 2675 lies between those of a(29367) = 49115, with bounding box width 2655, and a(29369) = 70002, with bounding box width 2681.

  • 1970-01-01 2 days ago ago

    Any OEIS post is interesting and worthy of HN. Sometimes Numberphile videos even come out the other end with extremely interesting animations of the results. This latest video was very good:

    https://www.youtube.com/watch?v=UiX4CFIiegM

  • dvh 3 days ago ago

    Can somebody explain what "less" keyword means? I'm asking for a friend.

    • yunruse 3 days ago ago

      According to the wiki [0], "This is a less interesting sequence and is less likely to be the one you were looking for."

      Confusingly, "more" means "please add more terms"...

      [0] https://oeis.org/wiki/Keywords

  • Gander5739 3 days ago ago