Numbers k such that k = (2*d_1 + 1)*(2*d_2 + 1)*...*(2*d_m + 1) where d_1 d_2 ... d_m is the decimal expansion of k.

A113856

Numbers k such that k = (2*d_1 + 1)*(2*d_2 + 1)*...*(2*d_m + 1) where d_1 d_2 ... d_m is the decimal expansion of k.

Terms

    a(0) =833a(1) =7425a(2) =17325a(3) =329175a(4) =7194825a(5) =7759125a(6) =275380875a(7) =2256271875a(8) =28879228125a(9) =152156958525

External references