Numbers k such that k = sigma(d_1!!*d_2!!*...*d_j!!) where d_1 d_2 ... d_j is the decimal expansion of k.
A110072
Numbers k such that k = sigma(d_1!!*d_2!!*...*d_j!!) where d_1 d_2 ... d_j is the decimal expansion of k.
Terms
- a(0) =1a(1) =163800a(2) =1547520a(3) =81254720
External references
- oeis: A110072