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A120400 Expansion of 1/(1-x-x^2-x^6). 0
1, 1, 2, 3, 5, 8, 14, 23, 39, 65, 109, 182, 305, 510, 854, 1429, 2392, 4003, 6700, 11213, 18767, 31409, 52568, 87980, 147248, 246441, 412456, 690306, 1155330, 1933616, 3236194, 5416251, 9064901, 15171458, 25391689, 42496763, 71124646, 119037660 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

a(n) = a(n-1) + a(n-2) + a(n-6)

CROSSREFS

Sequence in context: A094926 A078843 A018068 * A000621 A191317 A039828

Adjacent sequences:  A120397 A120398 A120399 * A120401 A120402 A120403

KEYWORD

easy,nonn

AUTHOR

Jon E. Schoenfield (jonscho(AT)hiwaay.net), Aug 27 2006

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.