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Search: id:A074611
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| 2, 9, 41, 189, 881, 4149, 19721, 94509, 456161, 2215269, 10814201, 53022429, 260917841, 1287811989, 6371951081, 31591319949, 156882857921, 780119322309, 3883416742361, 19348364235069, 96466943268401, 481235204714229
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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). E.g.f.: e^(4*x)+e^(5*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 11 2009]
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MATHEMATICA
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Table[4^n + 5^n, {n, 0, 25}]
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CROSSREFS
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Cf. A000051, A034472, A052539, A034474, A062394, A034491, A062395, A062396, A007689, A063376, A063481, A074600 - A074624.
Sequence in context: A130767 A020698 A128752 this_sequence A152052 A020038 A056845
Adjacent sequences: A074608 A074609 A074610 this_sequence A074612 A074613 A074614
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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 25 2002
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