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Search: id:A093462
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| A093462 |
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a(1)=1, a(n)=2[n^(n-1)-1]/(n-1)^2. |
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+0
2
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| 1, 2, 4, 14, 78, 622, 6536, 85598, 1345210, 24691358, 518748492, 12281130094, 323584515590, 9393074239694, 297887000259088, 10248191152060862, 380165561528647410, 15127415638330079806, 642761421592044700820
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OFFSET
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1,2
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MATHEMATICA
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Insert[Table[2*(n^(n - 1) - 1)/(n - 1)^2, {n, 2, 20}], 1, 1] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 18 2006
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CROSSREFS
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Cf. A093460, A093461.
Sequence in context: A007712 A075098 A052856 this_sequence A032052 A005737 A000609
Adjacent sequences: A093459 A093460 A093461 this_sequence A093463 A093464 A093465
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 05 2004
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EXTENSIONS
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Corrected and extended by Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 18 2006
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