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a(n) = n!/A124901(n).
2

%I #7 Mar 12 2020 05:28:13

%S 2,12,30,240,720,60480,60480,7983360,1108800,518918400,21794572800,

%T 62270208000,87178291200,35568742809600,2,40548366802944000,

%U 304112751022080000,851515702861824000,2534272925184000,5170403347776995328000,51704033477769953280000

%N a(n) = n!/A124901(n).

%Y Cf. A124900, A124901, A124902.

%K nonn

%O 5,1

%A _Artur Jasinski_, Nov 12 2006

%E More terms from the data at A124901 added by _Amiram Eldar_, Mar 12 2020