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A286956 Main diagonal of A286950. 2
1, 0, 1, 3, 4, 6, 6, 8, 8, 9, 10, 11, 11, 13, 14, 14, 16, 17, 18, 19, 20, 21, 23, 23, 24, 25, 27, 27, 28, 29, 30, 31, 32, 33, 34, 34, 36, 37, 38, 39, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52, 52, 53, 54, 55, 56, 58, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
FORMULA
a(n) = A010815(n) + n.
CROSSREFS
Sequence in context: A077542 A325611 A263842 * A265283 A023836 A064800
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 17 2017
STATUS
approved

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)