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Search: id:A126121
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| A126121 |
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Numerators of sequence of fractions with e.g.f. sqrt(1+x)/(1-x)^2. |
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+0
1
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| 1, 5, 31, 255, 2577, 31245, 439695, 7072695, 127699425, 2562270165, 56484554175, 1358576240175, 35374065613425, 992016072172125, 29792674421484975, 954480422711190375, 32479589325536978625, 1170329273010701929125, 44502357662442514209375, 1781390379962467540641375
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OFFSET
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0,2
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COMMENT
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Denominators are successive powers of 2.
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EXAMPLE
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The fractions are 1, 5/2, 31/4, 255/8, 2577/16, 31245/32, 439695/64, ...
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CROSSREFS
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Cf. A003148, A001174, A126115, A126119.
Sequence in context: A024451 A046852 A056541 this_sequence A167137 A000556 A125598
Adjacent sequences: A126118 A126119 A126120 this_sequence A126122 A126123 A126124
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KEYWORD
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nonn,frac
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mar 22 2007
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