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A027180
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a(n) = Sum{T(i,j)}, 0<=j<=i, 0<=i<=n, T given by A027170.
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0
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1, 7, 27, 79, 199, 459, 1003, 2119, 4383, 8947, 18115, 36495, 73303, 146971, 294363, 589207, 1178959, 2358531, 4717747, 9436255, 18873351, 37747627, 75496267, 150993639, 301988479, 603978259, 1207957923, 2415917359
(list; graph; refs; listen; history; internal format)
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