1,1

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

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.

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

Sequence in context: A225808 A076621 A134937 * A221856 A309273 A282470

Adjacent sequences: A076428 A076429 A076430 * A076432 A076433 A076434

nonn

Neil Fernandez, Oct 10 2002

approved