A027103 a(n) = self-convolution of row n of array T given by A027082.

1, 3, 11, 41, 161, 633, 2457, 9415, 35663, 133721, 497025, 1833499, 6719707, 24488183, 88798775, 320596441, 1152996137, 4132351481, 14764629473, 52606224267, 186963146315, 662947211163, 2345810793755, 8284654896229