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A139409 Numbers n such that n=d_1!!^2+d_2!!^2+...+d_k!!^2 where d_1d_2...d_k is the decimal expansion of n. 0

%I #2 Mar 30 2012 17:37:44

%S 1,11037,158712,904117,906373

%N Numbers n such that n=d_1!!^2+d_2!!^2+...+d_k!!^2 where d_1d_2...d_k is the decimal expansion of n.

%e 906373=9!!^2+0!!^2+6!!^2+3!!^2+7!!^2+3!!^2.

%K base,fini,full,nonn

%O 1,2

%A _Farideh Firoozbakht_, May 08 2008

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)