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

Offset

0,2

Links

Table of n, a(n) for n=0..30.

Formula

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

Example

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

Crossrefs

Cf. A073213.

Sequence in context: A049440 A177200 A177166 * A110462 A132375 A110360

Adjacent sequences: A073218 A073219 A073220 * A073222 A073223 A073224

Keyword

nonn,easy,tabl

Author

Jeremy Gardiner, Jul 21 2002

Extensions

Offset corrected by Alois P. Heinz, Jul 27 2021

Status

approved