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A086027
a(n) = Sum_(i=1..n) C(i+5,6)^2.
+0
23
1, 50, 834, 7890, 51990, 265434, 1119210, 4063866, 13081875, 38131900, 102259964, 255425340, 600047436, 1336192860, 2838530460
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.
AT&T Labs Research
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