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A249945
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a(n) = n! + 3^n.
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2
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2, 4, 11, 33, 105, 363, 1449, 7227, 46881, 382563, 3687849, 40093947, 479533041, 6228615123, 87183074169, 1307688716907, 20922832934721, 355687557236163, 6402374093148489, 121645101571093467, 2432902011663424401, 51090942182169793203, 1124000727808988739609
(list;
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = n! + 3^n.
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MAPLE
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MATHEMATICA
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PROG
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(PARI) vector(10, n, 3^n + n!) \\ Derek Orr, Nov 14 2014
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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