A120473 a(n) = A000045[n]*(A004001[n + 1] - 2*A004001[n] + A004001[n - 1]).
-1, 1, -2, 3, 0, -8, 0, 21, 0, 0, -89, 144, -233, 0, 0, 987, 0, 0, 0, -6765, 10946, 0, -28657, 46368, -75025, 0, 196418, -317811, 0, 0
Offset: 0
Keywords
Programs
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Mathematica
Conway[0] = 0; Conway[1] = Conway[2] = 1; Conway[n_Integer?Positive] := Conway[n] = Conway[Conway[n - 1]] + Conway[n - Conway[n - 1]] a[n_] := Fibonacci[n]*(Conway[n + 1] - 2*Conway[n] + Conway[n - 1]) Table[a[n], {n, 1, 30}]
Extensions
Edited by N. J. A. Sloane, Oct 01 2006