# A095670 (b-file synthesized from sequence entry) 0 4 1 29 2 120 3 372 4 960 5 2178 6 4488 7 8580 8 15444 9 26455 10 43472 11 68952 12 106080 13 158916 14 232560 15 333336 16 468996 17 648945 18 884488 19 1189100 20 1578720 21 2072070 22 2691000 23 3460860 24 4410900 25 5574699 26 6990624 27 8702320 28 10759232 29 13217160 30 16138848