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 A337621 a(n) is the length of the largest run of contiguous grid points on the n-th antidiagonal of the Even Conant lattice that are not on an edge, or 0 if no such point exists. 2
 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 3, 2, 2, 1, 2, 3, 4, 4, 3, 2, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 3, 4, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 3, 4, 4, 4, 4, 4, 3, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,15 LINKS Rémy Sigrist, Table of n, a(n) for n = 0..8191 Rémy Sigrist, Illustration of initial terms Rémy Sigrist, Scatterplot of the first 2^15 terms Rémy Sigrist, C++ program for A337621 FORMULA a(n) <= A337620(n). Apparently, abs(a(2*n) - 2*a(n)) <= 1. EXAMPLE See Links section. PROG (C++) See Links section. CROSSREFS Cf. A328078, A337620, A337622. Sequence in context: A064286 A002471 A218622 * A091243 A306615 A037826 Adjacent sequences:  A337618 A337619 A337620 * A337622 A337623 A337624 KEYWORD nonn,look AUTHOR Rémy Sigrist, Sep 09 2020 STATUS approved

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Last modified May 26 11:30 EDT 2022. Contains 354086 sequences. (Running on oeis4.)