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A027107
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a(n) = Sum{(k+1)*T(n,2n-k)}, 0<=k<=2n, T given by A027082.
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4
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1, 6, 20, 62, 188, 566, 1700, 5102, 15308, 45926, 137780, 413342, 1240028, 3720086, 11160260, 33480782, 100442348, 301327046, 903981140, 2711943422, 8135830268, 24407490806, 73222472420, 219667417262, 659002251788
(list; graph; refs; listen; history; internal format)
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