a(n) is least k such that k and k+n are adjacent nontrivial powers of positive integers, or 0 if no such k apparently exists.

A023056

a(n) is least k such that k and k+n are adjacent nontrivial powers of positive integers, or 0 if no such k apparently exists.

Terms

    a(0) =8a(1) =25a(2) =1a(3) =4a(4) =27a(5) =0a(6) =9a(7) =97336a(8) =16a(9) =2187a(10) =3125a(11) =2197a(12) =36a(13) =0a(14) =49a(15) =128a(16) =64a(17) =225a(18) =81a(19) =196a(20) =100a(21) =0a(22) =2025a(23) =1000a(24) =144a(25) =42849a(26) =169a(27) =484a(28) =0a(29) =6859

External references