A252708 - OEIS

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A252708

Sum_{k=0..n} k^(n+k)*(n+k)^k.

3

2, 259, 158268, 269187906, 978285792294, 6507711545263297, 71556972889550923184, 1209737575506373416337924, 29788382281118324885770212522, 1024436101844282730312688949278959, 47581802360081733847924522879325619588, 2904105920298407789174888476843692390201446

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

FORMULA

a(n) ~ 2^n * n^(3*n). - Vaclav Kotesovec, Dec 20 2014

MATHEMATICA

Table[Sum[k^(n+k)*(n+k)^k, {k, 0, n}], {n, 1, 12}]

CROSSREFS

Cf. A062817, A252709, A252710.

Sequence in context: A182422 A218435 A089663 * A103029 A122862 A236437

Adjacent sequences: A252705 A252706 A252707 * A252709 A252710 A252711

KEYWORD

nonn,easy

AUTHOR

Vaclav Kotesovec, Dec 20 2014

STATUS

approved