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Search: id:A014942
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| A014942 |
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a(1) = 1, a(n) = a(n-1) + n * 24^(n-1). |
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+0
2
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| 1, 49, 1777, 57073, 1715953, 49491697, 1387212529, 38078983921, 1028756811505, 27446832213745, 724884022832881, 18985057740861169, 493749574409596657, 12764586312924606193, 328300388160453422833, 8406016915457191128817
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OFFSET
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1,2
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FORMULA
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a(n)=(1/529)*[1+24^n*(23*n-1)], with n>=1 [From Paolo P. Lava (ppl(AT)spl.at), Jan 13 2009]
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MATHEMATICA
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a[1] = 1; a[n_Integer] := a[n - 1] + n*24^(n - 1); Table[ a[n], {n, 1, 20}]
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CROSSREFS
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Cf. A014960.
Sequence in context: A088068 A008843 A145848 this_sequence A065785 A163927 A061615
Adjacent sequences: A014939 A014940 A014941 this_sequence A014943 A014944 A014945
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KEYWORD
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nonn
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AUTHOR
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Olivier Gerard (olivier.gerard(AT)gmail.com)
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 15 2000
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