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A064484
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Triangle T(n,k), n >= 2,n+1<=k<=2*n-1, number of permutations p of 1,...,n, with max(p(i)+p(i-1),i=2..n)=k.
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0
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2, 2, 4, 4, 8, 12, 4, 32, 36, 48, 8, 64, 216, 192, 240, 8, 208, 648, 1536, 1200, 1440, 16, 416, 3024, 6144, 12000, 8640, 10080, 16, 1280, 9072, 37632, 60000, 103680, 70560, 80640, 32, 2560, 38880
(list; table; graph; refs; listen; history; internal format)
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