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A126890 Triangle read by rows: T(n,k) = n*(n+2*k+1)/2, 0<=k<=n. +0
19
0, 1, 2, 3, 5, 7, 6, 9, 12, 15, 10, 14, 18, 22, 26, 15, 20, 25, 30, 35, 40, 21, 27, 33, 39, 45, 51, 57, 28, 35, 42, 49, 56, 63, 70, 77, 36, 44, 52, 60, 68, 76, 84, 92, 100, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 55, 65, 75, 85, 95, 105, 115, 125, 135, 145, 155, 66, 77, 88 (list; table; graph; listen)
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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