OFFSET
1,2
FORMULA
EXAMPLE
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.
PROG
(Magma) [StringToInteger(&cat[IntegerToString(h): h in Reverse([i^2: i in Intseq(Factorial(n))])]): n in [1..50]];
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vincenzo Librandi, Jul 03 2014
STATUS
approved