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A118042
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Column 1 of triangle A118040, which is the matrix square of triangle A118032; also equals a bisection of A118034, which is column 1 of A118032.
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4
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1, 4, 14, 44, 130, 364, 990, 2540, 6514, 15640, 38434, 87940, 209166, 460224, 1063818, 2266576, 5105788, 10573476, 23296326, 47097284, 101395460, 200414252, 424162586, 823203108, 1705499044, 3248816636, 6647515550, 12492112904
(list; graph; refs; listen; history; internal format)
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