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A093462 a(1)=1, a(n) = 2(n^(n-1)-1)/(n-1)^2. 1
1, 2, 4, 14, 78, 622, 6536, 85598, 1345210, 24691358, 518748492, 12281130094, 323584515590, 9393074239694, 297887000259088, 10248191152060862, 380165561528647410, 15127415638330079806, 642761421592044700820 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
Insert[Table[2*(n^(n - 1) - 1)/(n - 1)^2, {n, 2, 20}], 1, 1] (* Stefan Steinerberger, Mar 18 2006 *)
CROSSREFS
Sequence in context: A075098 A340909 A052856 * A302136 A371674 A181080
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Apr 05 2004
EXTENSIONS
Corrected and extended by Stefan Steinerberger, Mar 18 2006
STATUS
approved

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Last modified May 23 07:28 EDT 2024. Contains 372760 sequences. (Running on oeis4.)