A027169 a(n) = self-convolution of row n of array T given by A027157.
4, 33, 128, 976, 4032, 30576, 129024, 976896, 4188160, 31728128, 137478144, 1042407424, 4552310784, 34549346304, 151786618880, 1152969736192, 5089355366400, 38688841924608, 171431270809600, 1304107929305088
Offset: 0