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A026673
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a(n) = T(2n,n-2), T given by A026670.
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0
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1, 7, 37, 177, 808, 3596, 15764, 68446, 295294, 1268356, 5430734, 23199304, 98933705, 421352919, 1792709561, 7621345733, 32380443643, 137504761035, 583684770103, 2476836131227, 10507517431481, 44566369523517, 188988331406117
(list; graph; refs; listen; history; internal format)
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