A073221 The terms of A073213 (sums of two powers of 17) divided by 2.

1, 9, 17, 145, 153, 289, 2457, 2465, 2601, 4913, 41761, 41769, 41905, 44217, 83521, 709929, 709937, 710073, 712385, 751689, 1419857, 12068785, 12068793, 12068929, 12071241, 12110545, 12778713, 24137569, 205169337, 205169345, 205169481, 205171793, 205211097, 205879265, 217238121, 410338673

Offset: 0

Author

Jeremy Gardiner, Jul 21 2002

Keywords

• nonn
• easy
• tabl

Examples

			a(4) = 145 = (17^2+17^0) / 2.
		

Crossrefs

Cf. A073213.

Formula

(17^n + 17^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.

Extensions

Offset corrected by Alois P. Heinz, Jul 27 2021