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 A115059 a(n+4) = a(n+3)+a(n+1)+a(n)+k(n), where k(n) = 0, 1, 0, or -1 according to n mod 4. 0
 0, 0, 1, 1, 1, 3, 5, 6, 10, 19, 30, 45, 74, 124, 199, 317, 515, 839, 1355, 2186, 3540, 5735, 9276, 15001, 24276, 39288, 63565, 102841, 166405, 269259, 435665, 704910, 1140574, 1845499, 2986074, 4831557, 7817630, 12649204, 20466835, 33116021 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 COMMENTS a(n) + 2a(n+2) + a(n+4) is the (n+4)th Fibonacci number. LINKS CROSSREFS Sequence in context: A194466 A270416 A290269 * A250218 A092835 A327433 Adjacent sequences:  A115056 A115057 A115058 * A115060 A115061 A115062 KEYWORD nonn AUTHOR M. N. Deshpande (dpratap_ngp(AT)sancharnet.in), Feb 28 2006 EXTENSIONS Edited by Don Reble, Mar 14 2006 STATUS approved

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Last modified December 14 09:41 EST 2019. Contains 329979 sequences. (Running on oeis4.)