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A165711
a(n) = Sum_{k=1..n} k!^k!.
1
1, 5, 46661, 1333735776850284124449081472890437
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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 April 23 09:22 EDT 2024. Contains 371905 sequences. (Running on oeis4.)