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A036719 G.f. satisfies A(x) = 1 + x*cycle_index(Cyclic(4), A(x)). 5
1, 1, 1, 3, 7, 22, 65, 212, 697, 2372, 8179, 28703, 101851, 365393, 1322034, 4820378, 17691018, 65306700, 242317423, 903242615, 3380707920, 12700575742, 47874113728, 181013422393, 686341240781, 2609093456212, 9941953711409 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..26.

CROSSREFS

Cf. A036717, A036718.

Sequence in context: A229900 A079120 A092566 * A166135 A007595 A148681

Adjacent sequences:  A036716 A036717 A036718 * A036720 A036721 A036722

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 24 20:53 EDT 2019. Contains 323534 sequences. (Running on oeis4.)