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Search: id:A074509
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| 3, 11, 59, 371, 2483, 17051, 118379, 825731, 5771363, 40373291, 282534299, 1977503891, 13841818643, 96890604731, 678227855819, 4747575858851, 33232973616323, 232630643127371, 1628413985330939, 11398896347634611
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OFFSET
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0,1
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FORMULA
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G.f.: 1/(1-x)+1/(1-3*x)+1/(1-7*x). E.g.f.: e^x+e^(3*x)+e^(7*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 26 2008]
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MATHEMATICA
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Table[1^n + 3^n + 7^n, {n, 0, 20}]
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CROSSREFS
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Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A156560 A028342 A137982 this_sequence A112368 A152796 A007807
Adjacent sequences: A074506 A074507 A074508 this_sequence A074510 A074511 A074512
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KEYWORD
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easy,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 23 2002
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