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0, 15, 60, 135, 240, 375, 540, 735, 960, 1215, 1500, 1815, 2160, 2535, 2940, 3375, 3840, 4335, 4860, 5415, 6000, 6615, 7260, 7935, 8640, 9375, 10140, 10935, 11760, 12615, 13500, 14415, 15360, 16335, 17340, 18375, 19440, 20535, 21660, 22815
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Number of edges in a complete 6-partite graph of order 6n, K_n,n,n,n,n,n
15 times the squares. [From Omar E. Pol (info(AT)polprimos.com), Dec 13 2008]
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FORMULA
| a(n) = A000290(n)*15 = A033428(n)*5 = A033429(n)*3. [From Omar E. Pol (info(AT)polprimos.com), Dec 13 2008]
a(n) = A008587(n)*A008585(n). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 12 2010]
a(n)=a(n-1)+30*n-15 (With a(0)=0) [From Vincenzo Librandi, Dec 15 2010]
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MAPLE
| seq(bell(4, j)*(j-2)^2, j = 2 .. 41) ; - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Nov 29 2007
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CROSSREFS
| A033583, A033581, A033428, A000290, A000217.
Cf. A033429. [From Omar E. Pol (info(AT)polprimos.com), Dec 13 2008]
Sequence in context: A020187 A022287 A206238 * A005945 A110755 A206231
Adjacent sequences: A064758 A064759 A064760 * A064762 A064763 A064764
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KEYWORD
| nonn
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AUTHOR
| Roberto E. Martinez II (remartin(AT)fas.harvard.edu), Oct 18 2001
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