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

Author

Neil Fernandez, Oct 10 2002

Keywords

• nonn

Examples

			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.