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A165711 a(n) = Sum_{k=1..n} k!^k!. 1
1, 5, 46661, 1333735776850284124449081472890437 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The next term has 250 digits. - Harvey P. Dale, Dec 19 2014

LINKS

Table of n, a(n) for n=1..4.

MATHEMATICA

s=0; lst={}; Do[AppendTo[lst, s+=n!^n! ], {n, 1, 6, 1}]; lst

Accumulate[Table[(k!)^k!, {k, 5}]] (* Harvey P. Dale, Dec 19 2014 *)

PROG

a(n)=sum(k=1, n, k!^k!)

CROSSREFS

Cf. A165710.

Sequence in context: A193148 A307492 A355959 * A167369 A259161 A356762

Adjacent sequences:  A165708 A165709 A165710 * A165712 A165713 A165714

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Sep 24 2009

EXTENSIONS

Program by Charles R Greathouse IV, Oct 12 2009

STATUS

approved

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Last modified October 5 14:56 EDT 2022. Contains 357259 sequences. (Running on oeis4.)