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Search: id:A151665
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| A151665 |
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G.f.: Prod_{k >= 0} (1+3*x^(4^k)). |
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+0
18
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| 1, 3, 0, 0, 3, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 9, 0, 0, 9, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 9, 0, 0, 9, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 27, 0, 0, 27, 81, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
(list; graph; listen)
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OFFSET
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0,2
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CROSSREFS
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For generating functions Prod_{k>=0} (1+a*x^(b^k)) for the following values of (a,b) see: (1,2) A000012 and A000027, (1,3) A039966 and A005836, (1,4) A151666 and A000695, (1,5) A151667 and A033042, (2,2) A001316, (2,3) A151668, (2,4) A151669, (2,5) A151670, (3,2) A048883, (3,3) A117940, (3,4) A151665, (3,5) A151671, (4,2) A102376, (4,3) A151672, (4,4) A151673, (4,5) A151674.
Sequence in context: A037285 A005082 A050452 this_sequence A079201 A079209 A021773
Adjacent sequences: A151662 A151663 A151664 this_sequence A151666 A151667 A151668
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), May 30 2009
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