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Search: id:A103459
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| 1, 9, 65, 513, 4097, 32769, 262145, 2097153, 16777217, 134217729, 1073741825, 8589934593, 68719476737, 549755813889, 4398046511105, 35184372088833, 281474976710657, 2251799813685249, 18014398509481985, 144115188075855873
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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a(n)^3 is palindromic in base 8 (1,1331,1030301,1003003001,....)
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LINKS
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P. De Geest, World!Of Numbers
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FORMULA
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G.f.: (1-8x^2)/((1-x)(1-8x)); a(n)=sum{k=0..n, binomial(n, k)*0^(k(n-k))*8^k}.
a(n)=A062395(n), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 28 2008]
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CROSSREFS
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Cf. A046233.
Sequence in context: A020234 A154996 A128195 this_sequence A100311 A120286 A152581
Adjacent sequences: A103456 A103457 A103458 this_sequence A103460 A103461 A103462
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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), Feb 07 2005
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