A027182 a(n) = self-convolution of row n of array T given by A027170.
18, 150, 820, 3726, 15492, 61660, 240328, 928110, 3572692, 13749580, 52977216, 204478276, 790747504, 3063728856, 11891504944, 46231328174, 180005765748, 701823431740, 2739725128448, 10707198384348, 41888225645152, 164027934617024
Offset: 0