A076431 Perfect powers for which the two closest perfect powers are smaller.

9, 16, 36, 128, 144, 256, 361, 529, 1024, 1369, 1764, 2209, 2809, 3136, 3481, 5041, 5929, 6889, 8281, 9409, 10816, 12321, 13924, 16900, 17689, 19881, 22201, 24649, 27225, 29929, 33124, 36100, 39601, 43264, 51076, 55225, 59536, 64009, 69169

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Example

The two closest perfect powers to 9 are 8 (difference = 1) and 4 (difference =5). The third closest is 16 (difference = 7). Both 8 and 4 are smaller than 9, so 9 is in the list.

Crossrefs

Cf. A001597, A053289, A075772, A076432, A076433.

Sequence in context: A225808 A076621 A134937 * A221856 A309273 A358627

Adjacent sequences: A076428 A076429 A076430 * A076432 A076433 A076434

Keyword

nonn

Author

Neil Fernandez, Oct 10 2002

Status

approved