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Search: id:A141342
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| A141342 |
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A transform of the Fibonacci numbers. |
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+0
1
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| 1, 1, -1, 3, -13, 65, -353, 2025, -12077, 74143, -465481, 2974863, -19289821, 126594191, -839273105, 5612483619, -37814455781, 256447068841, -1749182184793, 11991887667273, -82588248514885, 571118483653841
(list; graph; listen)
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OFFSET
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0,4
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COMMENT
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A transform of F(n+1) by the inverse of the Riordan array (1,x(1+x)/(1-2x)). Equivlently, row sums
of the inverse of the Riordan array (1,x/(2-sqrt(1+4x)).
Hankel transform is alternating sign version of A083667.
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FORMULA
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G.f.: 1/(1-2x-2x^2+x*sqrt(1+8x+4x^2));
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CROSSREFS
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Cf. A141343.
Sequence in context: A060927 A074537 A106227 this_sequence A009102 A080227 A002468
Adjacent sequences: A141339 A141340 A141341 this_sequence A141343 A141344 A141345
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KEYWORD
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easy,sign
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Jun 26 2008
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