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Search: id:A085281
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| A085281 |
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Expansion of (1-3x+x^2)/((1-2x)(1-3x)). |
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+0
2
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| 1, 2, 5, 13, 35, 97, 275, 793, 2315, 6817, 20195, 60073, 179195, 535537, 1602515, 4799353, 14381675, 43112257, 129271235, 387682633, 1162785755, 3487832977, 10462450355, 31385253913, 94151567435, 282446313697, 847322163875
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Binomial transform of A005578. Binomial transform is A085282.
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FORMULA
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a(n)=3^n/3+2^n/2+0^n/6
a(n)=A007689(n-1), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 12 2008]
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PROGRAM
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sage: [ceil(lucas_number2(n, 5, 6))for n in xrange(-1, 27)] - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 08 2008
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CROSSREFS
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Sequence in context: A022855 A091190 A007689 this_sequence A082582 A086581 A059027
Adjacent sequences: A085278 A085279 A085280 this_sequence A085282 A085283 A085284
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Jun 25 2003
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