A103954 a(n) is the least k such that k and k+n are adjacent powerful numbers.

8, 25, 1, 4, 27, 214369, 9, 64, 16, 2187, 3125, 500, 36, 30459361, 49, 128, 512, 225, 81, 21296, 1331, 100467, 625, 1000, 144, 11881, 169, 972, 36963, 6859, 361, 256, 12967168, 899236854927, 289, 864, 117612, 3087, 10609, 2704, 800, 518436000625

Offset

1,1

Comments

Sister sequence of a(n)+n is given by A103955.

a(105) > 10^22. - Donovan Johnson, Nov 19 2011

Links

Donovan Johnson, Table of n, a(n) for n = 1..104

Robert G. Wilson v, Table of n, a(n) for n = 1..10000, set to 0 where term is unknown.

Crossrefs

Cf. A103953, A103955, A023056.

Sequence in context: A103953 A076444 A023056 * A217012 A200838 A302160

Adjacent sequences: A103951 A103952 A103953 * A103955 A103956 A103957

Keyword

nonn

Author

Max Alekseyev, Feb 22 2005

Extensions

Offset corrected by Donovan Johnson, Nov 19 2011

Status

approved