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1, 5, 29, 185, 1241, 8525, 59189, 412865, 2885681, 20186645, 141267149, 988751945, 6920909321, 48445302365, 339113927909, 2373787929425, 16616486808161, 116315321563685, 814206992665469, 5699448173817305, 39896134892198201
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Binomial transform of A081336. 5th binomial transform of (1,0,4,0,16,0,64,....).
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FORMULA
| a(n)=(7^n+3^n)/2. a(n)=10a(n-1)-21a(n-2), a(0)=1, a(1)=5. G.f.: (1-5x)/((1-3x)(1-7x)). E.g.f. exp(5x)cosh(2x).
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CROSSREFS
| Cf. A081337.
Sequence in context: A190917 A153391 A175891 * A059231 A127846 A137573
Adjacent sequences: A081333 A081334 A081335 * A081337 A081338 A081339
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KEYWORD
| easy,nonn
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Mar 18 2003
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