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 A319290 The y coordinates of the shell enumeration of N X N where N = {0, 1, 2, ...}(A319514). 5
 0, 1, 1, 0, 0, 1, 2, 2, 2, 3, 3, 3, 3, 2, 1, 0, 0, 1, 2, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0, 1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 2, 1, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,7 COMMENTS See A319514 for comments and references. LINKS Peter Luschny, Table of n, a(n) for n = 0..10000 PROG (Julia) function A319290(n)     m = x = isqrt(n)     y = n - x^2     x <= y && ((x, y) = (2x - y, x))     isodd(m) ? x : y end CROSSREFS Cf. A319514. Sequence in context: A292995 A037179 A127971 * A230516 A192688 A156752 Adjacent sequences:  A319287 A319288 A319289 * A319291 A319292 A319293 KEYWORD nonn AUTHOR Peter Luschny, Sep 23 2018 STATUS approved

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Last modified May 7 23:48 EDT 2021. Contains 343652 sequences. (Running on oeis4.)