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%I #15 Sep 08 2022 08:46:08
%S 1,4,36,416,140,4940,250160,160940,936464640,9364646400,981811366400,
%T 1649810013600,3644490406400,6449149644811400,1904936491693664000,
%U 408144496481646464000,925253664491646408136000,36160494994902549464000,141361625100160646494000
%N Numbers obtained by concatenating the squares of the digits of n!.
%F a(n) = A048385(A000142(n)). - _Michel Marcus_, Jul 04 2014
%e For n = 7, 7! = 5040 and a(7) = 250160, which is the concatenation of the squares of the digits of 5040. For n=8, 8! = 40320 and a(8) = 160940.
%o (Magma) [StringToInteger(&cat[IntegerToString(h): h in Reverse([i^2: i in Intseq(Factorial(n))])]): n in [1..50]];
%Y Cf. A000142, A048385.
%K nonn,base
%O 1,2
%A _Vincenzo Librandi_, Jul 03 2014
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