Numbers k such that (k-p)*(k+p) contains k as a substring, where p > 0 and p = A007954(k) is the product of digits of k.

A334534

Numbers k such that (k-p)*(k+p) contains k as a substring, where p > 0 and p = A007954(k) is the product of digits of k.

Terms

    a(0) =25a(1) =28a(2) =128a(3) =225a(4) =293a(5) =678a(6) =725a(7) =742a(8) =749a(9) =4225a(10) =4421a(11) =6225a(12) =8926a(13) =72225a(14) =617371a(15) =1985525a(16) =3679518a(17) =4381824a(18) =6816771a(19) =8572645a(20) =9721317a(21) =43872768a(22) =54639413a(23) =758873243a(24) =5895396725a(25) =7796276839a(26) =8881527332a(27) =9458237492a(28) =9594769255a(29) =9949621217

External references