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A027330
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a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=m, where m=0 for n=1; m=n+1 for n >= 2; T given by A026148.
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0
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1, 6, 50, 394, 3120, 24922, 200676, 1627434, 13282008, 109014050, 899304906, 7452793766, 62019712684, 518052932358
(list; graph; refs; listen; history; internal format)
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