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Search: id:A130847
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| A130847 |
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Triangle T(n,k), 0<=k<=n, read by rows, given by [1,2,3,4,5,6,7,8,9,10,...] DELTA [1,1,6,6,15,15,28,28,...] where DELTA is the operator defined in A084938 . |
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| 1, 1, 1, 3, 5, 2, 15, 42, 37, 10, 105, 450, 699, 458, 104, 945, 5775, 13845, 16065, 8866, 1816, 10395, 85995, 293265, 522345, 506028, 248660, 47312
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