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A027330
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a(n) = Sum_{k=0..m} T(n,k) * T(n,k+1), where m=0 for n=1; m=n+1 for n >= 2; and T is 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, 4342182907626, 36509428285466, 307859922637008, 2602876165613074, 22060637925756358, 187399432888840254, 1595268339755117256
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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