login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299035 a(n) = [x^n] Product_{k=1..n} 1/(1-k^k*x). 3
1, 1, 21, 23980, 4896624249, 327969374429859111, 11123496833223144303532943536, 273486179312859032380857823231575174373792, 6620886635410516590847876477644821623913997428738363459941 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..26

FORMULA

a(n) ~ n^(n^2). - Vaclav Kotesovec, Feb 02 2018

MATHEMATICA

Table[SeriesCoefficient[Product[1/(1 - k^k*x), {k, 1, n}], {x, 0, n}], {n, 0, 10}] (* Vaclav Kotesovec, Feb 02 2018 *)

CROSSREFS

Cf. A002109.

Cf. A007820, A298851, A299036.

Sequence in context: A172724 A001167 A250066 * A189648 A283841 A100414

Adjacent sequences:  A299032 A299033 A299034 * A299036 A299037 A299038

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Feb 01 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 20:22 EDT 2019. Contains 327181 sequences. (Running on oeis4.)