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Search: id:A073220
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| 1, 7, 13, 85, 91, 169, 1099, 1105, 1183, 2197, 14281, 14287, 14365, 15379, 28561, 185647, 185653, 185731, 186745, 199927, 371293, 2413405, 2413411, 2413489, 2414503, 2427685, 2599051, 4826809, 31374259, 31374265, 31374343, 31375357
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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(13^n + 13^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.
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EXAMPLE
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a(4) = 85 = (11^2+11^0) / 2
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CROSSREFS
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Cf. A072390.
Sequence in context: A106976 A098478 A061521 this_sequence A110455 A132373 A110293
Adjacent sequences: A073217 A073218 A073219 this_sequence A073221 A073222 A073223
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KEYWORD
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easy,nonn
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AUTHOR
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Jeremy Gardiner (jeremy.gardiner(AT)btinternet.com), Jul 21 2002
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