A087646 a(n) is the first term of the first run of exactly n non-perfect-powers.

26, 2, 5, 28, 0, 10, 97337, 17, 2188, 3126, 2198, 37, 0, 50, 129, 65, 226, 82, 197, 101, 0, 2026, 1001, 145, 42850, 170, 485, 0, 6860, 0, 7745, 257, 0, 290, 1729, 14348908, 1332, 362, 2705, 401, 0, 442, 0, 9217, 0, 530, 21905

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Example

a(3)=5 because (5,6,7) is the smallest consecutive triple of non-powers, followed by (33,34,35), (122,123,124), ...
The zeros above are conjectured and correspond to terms of A023057.

Crossrefs

Cf. A001597, A023057, A053289.

A complement to A001597.

Sequence in context: A040670 A040672 A040673 * A040674 A037929 A036167

Adjacent sequences: A087643 A087644 A087645 * A087647 A087648 A087649

Keyword

hard,nonn

Author

Lekraj Beedassy, Sep 23 2003

Extensions

Edited by Don Reble, Sep 26 2003

Status

approved