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Search: id:A074562
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| 3, 16, 90, 532, 3282, 20956, 137370, 918052, 6220962, 42568876, 293289450, 2030349172, 14102205042, 98176822396, 684595023930, 4779152829892, 33389813427522, 233410633309516, 1632297014652810, 11418243549608212
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OFFSET
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0,1
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FORMULA
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G.f.: 1/(1-4*x)+1/(1-5*x)+1/(1-7*x). E.g.f.: e^(4*x)+e^(5*x)+e^(7*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 30 2008]
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MATHEMATICA
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Table[4^n + 5^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: A026111 A026330 A146963 this_sequence A130744 A009124 A067679
Adjacent sequences: A074559 A074560 A074561 this_sequence A074563 A074564 A074565
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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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