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a(n) = (n!+10)/10.
23

%I #14 Oct 14 2024 01:38:09

%S 13,73,505,4033,36289,362881,3991681,47900161,622702081,8717829121,

%T 130767436801,2092278988801,35568742809601,640237370572801,

%U 12164510040883201,243290200817664001,5109094217170944001

%N a(n) = (n!+10)/10.

%H Amiram Eldar, <a href="/A139157/b139157.txt">Table of n, a(n) for n = 5..450</a>

%t Table[(n! + 10)/10, {n, 5, 30}]

%o (PARI) for(n=5, 20, a=(n!+10)/10; print1(a, ", ")) \\ _Felix Fröhlich_, Jul 07 2014

%Y Cf. A007749, A020458, A082672, A089085, A089130, A117141, A139056-A139066, A139068, A137390, A139070-A139075, A139148-A139156, A139159, A139160, A139161, A139162.

%K nonn

%O 5,1

%A _Artur Jasinski_, Apr 11 2008

%E Name corrected by _Amiram Eldar_, Oct 14 2024