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A122796
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Connell (3,5)-sum sequence (partial sums of the (3,5)-Connell sequence)
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7
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1, 3, 8, 16, 27, 41, 58, 76, 97, 121, 148, 178, 211, 247, 286, 328, 373, 421, 470, 522, 577, 635, 696, 760, 827, 897, 970, 1046, 1125, 1207, 1292, 1380, 1471, 1565, 1660, 1758, 1859, 1963, 2070, 2180, 2293, 2409, 2528, 2650, 2775, 2903, 3034, 3168, 3305, 3445, 3588, 3734, 3883, 4035, 4190, 4346, 4505, 4667, 4832, 5000, 5171, 5345, 5522, 5702, 5885, 6071, 6260, 6452, 6647, 6845
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OFFSET
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1,2
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LINKS
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Grady D. Bullington, The Connell Sum Sequence, J. Integer Seq. 10 (2007), Article 07.2.6. (includes direct formula for a(n))
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FORMULA
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a(n) = (n-th triangular number)-n+(n-th partial sum of A122799).
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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Grady Bullington (bullingt(AT)uwosh.edu), Sep 14 2006
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STATUS
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approved
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