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A076431 Perfect powers for which the two closest perfect powers are smaller. 2
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 (list; graph; refs; listen; history; text; internal format)
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 A282470

Adjacent sequences:  A076428 A076429 A076430 * A076432 A076433 A076434

KEYWORD

nonn

AUTHOR

Neil Fernandez, Oct 10 2002

STATUS

approved

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Last modified September 21 13:20 EDT 2020. Contains 337272 sequences. (Running on oeis4.)