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 A134409 Second differences of A006336. 3
 0, 1, 1, 0, 2, 0, 3, 3, 0, 5, 5, 0, 8, 0, 11, 11, 0, 16, 0, 21, 21, 0, 29, 29, 0, 40, 0, 51, 51, 0, 67, 67, 0, 88, 0, 109, 109, 0, 138, 0, 167, 167, 0, 207, 207, 0, 258, 0, 309, 309, 0, 376, 0, 443, 443, 0, 531, 531, 0, 640, 0, 749, 749, 0, 887, 887, 0, 1054, 0, 1221, 1221, 0, 1428 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS a(n) = A006336(n+2)-2*A006336(n+1)-A006336(n) = A134408(n+1)-A134408(n); apart from 0 same range as A006336; A001950(n) = Min(m: a(m) = A006336(n)). LINKS CROSSREFS Sequence in context: A171307 A209693 A154344 * A327878 A298605 A180013 Adjacent sequences:  A134406 A134407 A134408 * A134410 A134411 A134412 KEYWORD nonn AUTHOR Reinhard Zumkeller, Oct 24 2007 STATUS approved

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Last modified February 20 13:40 EST 2020. Contains 332077 sequences. (Running on oeis4.)