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A027983
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T(n,n+1) + T(n,n+2) + ... + T(n,2n), T given by A027960.
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0
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1, 5, 14, 35, 81, 180, 389, 825, 1726, 3575, 7349, 15020, 30561, 61965, 125294, 252795, 509161, 1024100, 2057549, 4130225, 8284926, 16609455, 33282989, 66669660, 133507081, 267285605, 535010414, 1070731475, 2142612801
(list; graph; refs; listen; history; internal format)
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