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Search: id:A074543
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| 3, 17, 121, 953, 7873, 66857, 578161, 5063033, 44726593, 397498697, 3547251601, 31743858713, 284606322913, 2554926530537, 22955156635441, 206361317111993, 1855841298824833, 16694108359242377, 150196195253929681
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OFFSET
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0,1
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FORMULA
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G.f.: 1/(1-2*x)+1/(1-6*x)+1/(1-9*x). E.g.f.: e^(2*x)+e^(6*x)+e^(9*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 27 2008]
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MATHEMATICA
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Table[2^n + 6^n + 9^n, {n, 0, 20}]
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CROSSREFS
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Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A074544 A165976 A121572 this_sequence A129115 A093460 A089815
Adjacent sequences: A074540 A074541 A074542 this_sequence A074544 A074545 A074546
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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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