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A026822
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CONTINUANT transform of Fibonacci number 1, 1, 2, 3, 5, 8, ...
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2
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1, 2, 5, 17, 90, 737, 9671, 203828, 6939823, 381894093, 33995514100, 4895735924493, 1140740465920969, 430064051388129806, 262340212087225102629, 258930219394142564424629, 413511822712657762611235142, 1068514808819727052729996031557, 4467460829187101520121876019174959
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 1..75
N. J. A. Sloane, Transforms
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MAPLE
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with(combinat):
a:= proc(n) option remember; `if`(n<0, 0,
`if`(n=0, 1, fibonacci(n) *a(n-1) +a(n-2)))
end:
seq(a(n), n=1..20); # Alois P. Heinz, Aug 06 2013
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MATHEMATICA
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a[n_] := a[n] = If[n<0, 0, If[n==0, 1, Fibonacci[n] a[n-1] + a[n-2]]];
Array[a, 20] (* Jean-François Alcover, Nov 09 2020, after Maple *)
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CROSSREFS
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Sequence in context: A216519 A245108 A195137 * A059248 A203006 A143878
Adjacent sequences: A026819 A026820 A026821 * A026823 A026824 A026825
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Jun 10 2002
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STATUS
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approved
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