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Search: id:A101657
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A101657 a(n)=Product{k=0..n, 1+2^A101650(k)}/2. +0
1
1, 2, 6, 12, 60, 180, 900, 1800, 3600, 18000, 54000, 162000, 486000, 2430000, 4860000, 9720000, 29160000, 58320000, 116640000, 583200000, 1749600000, 5248800000, 10497600000, 31492800000, 62985600000, 188956800000 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Adjacent sequences: A101654 A101655 A101656 this_sequence A101658 A101659 A101660

Sequence in context: A139315 A014767 A002319 this_sequence A104371 A104350 A072489

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Dec 10 2004

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

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