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A061178 Third column (m=2) of triangle A060920 (bisection of Fibonacci triangle, even part). 2
1, 9, 51, 233, 942, 3522, 12473, 42447, 140109, 451441, 1426380, 4434420, 13599505, 41225349, 123723351, 368080793, 1086665562, 3186317718, 9286256393, 26916587307, 77634928209, 222920650081 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Numerator polynomial of g.f. is sum(A061176(3,m)*x^m,m=0..3).
LINKS
FORMULA
a(n)= A060920(n+2, 2).
G.f.: (1-x^3)/(1-3*x+x^2)^3.
CROSSREFS
Sequence in context: A005746 A220236 A345954 * A246178 A213164 A278135
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Apr 20 2001
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)