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A139183 a(n) = (n! - 8)/8. 10

%I #13 Sep 08 2022 08:45:33

%S 2,14,89,629,5039,45359,453599,4989599,59875199,778377599,10897286399,

%T 163459295999,2615348735999,44460928511999,800296713215999,

%U 15205637551103999,304112751022079999

%N a(n) = (n! - 8)/8.

%C Original name: Natural numbers of the form (n!-8)/8.

%H Vincenzo Librandi, <a href="/A139183/b139183.txt">Table of n, a(n) for n = 4..300</a>

%p seq((factorial(n)-8)/8,n=4..25); # _Muniru A Asiru_, Oct 20 2018

%t Table[(n! - 8)/8, {n, 4, 20}]

%o (Magma) [(Factorial(n)-8)/8: n in [4..25]]; // _Vincenzo Librandi_, Jul 20 2011

%o (GAP) List([4..25],n->(Factorial(n)-8)/8); # _Muniru A Asiru_, Oct 20 2018

%Y Cf. A033312, A139172, A139173, A139174, A139175, A139176, A139177, A139183, A139184.

%K nonn

%O 4,1

%A _Artur Jasinski_, Apr 11 2008

%E New name from _Jon E. Schoenfield_, Oct 19 2018

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Last modified April 16 12:52 EDT 2024. Contains 371711 sequences. (Running on oeis4.)