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A073221 The terms of A073213 (sums of two powers of 17) divided by 2. 0
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 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

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

easy,nonn

AUTHOR

Jeremy Gardiner (jeremy.gardiner(AT)btinternet.com), Jul 21 2002

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.