A156102

2^(n+1)*P_n(1/2) (see A155100).

1, 1, 5, 10, 70, 440, 4280, 44560, 575920, 8224640, 134583680, 2422639360, 48232203520, 1044455459840, 24541639470080, 620471213148160, 16815502865029120, 485975291876311040, 14924807659888148480, 485281269068774440960, 16656262639515411742720, 601766641496428795658240

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