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Search: id:A014641
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A014641 Odd octagonal numbers: (2n+1)(6n+1). +0
5
1, 21, 65, 133, 225, 341, 481, 645, 833, 1045, 1281, 1541, 1825, 2133, 2465, 2821, 3201, 3605, 4033, 4485, 4961, 5461, 5985, 6533, 7105, 7701, 8321, 8965, 9633, 10325, 11041, 11781, 12545, 13333, 14145, 14981, 15841, 16725, 17633, 18565, 19521, 20501, 21505 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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