# A321672 (b-file synthesized from sequence entry) 0 0 1 0 2 12 3 108 4 480 5 1500 6 3780 7 8232 8 16128 9 29160 10 49500 11 79860 12 123552 13 184548 14 267540 15 378000 16 522240 17 707472 18 941868 19 1234620 20 1596000 21 2037420 22 2571492 23 3212088 24 3974400 25 4875000 26 5931900 27 7164612 28 8594208 29 10243380 30 12136500