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Search: id:A026040
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| A026040 |
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Dot_product(1,2,...,n)*(4,5,...,n,1,2,3). |
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+0
4
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| 24, 40, 64, 98, 144, 204, 280, 374, 488, 624, 784, 970, 1184, 1428, 1704, 2014, 2360, 2744, 3168, 3634, 4144, 4700, 5304, 5958, 6664, 7424, 8240, 9114, 10048, 11044, 12104, 13230, 14424, 15688, 17024, 18434, 19920, 21484, 23128, 24854, 26664
(list; graph; listen)
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OFFSET
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4,1
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FORMULA
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a(n)=n(n^2-3n+14)/3 (n>=4). - Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 27 2006
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MAPLE
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a:=n->n*(n^2-3*n+14)/3: seq(a(n), n=4..50); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 27 2006
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MATHEMATICA
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Table[Range[n].RotateLeft[Range[n], 3], {n, 4, 52}] - T. D. Noe (noe(AT)sspectra.com), Nov 07 2006
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CROSSREFS
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Column 3 of triangle A094414.
Sequence in context: A043119 A039296 A043899 this_sequence A141717 A007372 A062910
Adjacent sequences: A026037 A026038 A026039 this_sequence A026041 A026042 A026043
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 07 2006
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