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A033582 7n^2. +0
4
0, 7, 28, 63, 112, 175, 252, 343, 448, 567, 700, 847, 1008, 1183, 1372, 1575, 1792, 2023, 2268, 2527, 2800, 3087, 3388, 3703, 4032, 4375, 4732, 5103, 5488, 5887, 6300, 6727, 7168, 7623, 8092, 8575, 9072 (list; graph; listen)
OFFSET

0,2

COMMENT

Number of edges of the complete bipartite graph of order 8n, K_n,7n - Roberto E. Martinez II (remartin(AT)fas.harvard.edu), Jan 07 2002

Number of edges of the complete tripartite graph of order 5n, K_n,n,3n - Roberto E. Martinez II (remartin(AT)fas.harvard.edu), Jan 07 2002

FORMULA

Central terms of the triangle in A132111: a(n)=A132111(2*n,n). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 10 2007

CROSSREFS

Sequence in context: A078307 A045551 A024844 this_sequence A008457 A138503 A064951

Adjacent sequences: A033579 A033580 A033581 this_sequence A033583 A033584 A033585

KEYWORD

nonn

AUTHOR

njas

page 1

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.


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