Numbers n such that if m = reverse(sigma(n)-n) then n = reverse(sigma(m)-m).

A251810

Numbers n such that if m = reverse(sigma(n)-n) then n = reverse(sigma(m)-m).

Terms

    a(0) =6a(1) =741a(2) =973a(3) =4056a(4) =4296a(5) =41642a(6) =49222a(7) =425822a(8) =457042a(9) =498906a(10) =831805a(11) =998462a(12) =20671542a(13) =41673714a(14) =73687923a(15) =4158499614a(16) =54809993252a(17) =67820167555

External references