A027163 a(n) = T(n,[ n/2 ]), T given by A027157.
1, 2, 3, 6, 24, 40, 76, 152, 672, 1088, 2208, 4416, 20224, 32384, 67776, 135552, 632320, 1006592, 2144768, 4289536, 20238336, 32100352, 69203968, 138407936, 658079744, 1041203200, 2263351296, 4526702592, 21643526144, 34182430720
Offset: 0