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A062815
a(n) = Sum_{i=1..n} i^(i+1).
4
1, 9, 90, 1114, 16739, 296675, 6061476, 140279204, 3627063605, 103627063605, 3242055440326, 110235260819398, 4047611646518687, 159615707204330911, 6728024062917221536, 301875929242270047392, 14364960381309995038401
OFFSET
1,2
LINKS
MATHEMATICA
Accumulate[#^(#+1)&/@Range[17]] (* Harvey P. Dale, Mar 18 2011 *)
PROG
(PARI) a(n) = sum(i=1, n, i^(i+1)); \\ Michel Marcus, Mar 26 2019
CROSSREFS
Partial sums of A007778. - Michel Marcus, Mar 26 2019
Sequence in context: A049389 A127769 A276961 * A294610 A294813 A218118
KEYWORD
nonn,easy
AUTHOR
Olivier GĂ©rard, Jun 23 2001
EXTENSIONS
Definition simplified by Jon E. Schoenfield, Nov 29 2008
STATUS
approved