# A270272 (b-file synthesized from sequence entry) 0 1 1 64 2 1000 3 8000 4 42875 5 175616 6 592704 7 1728000 8 4492125 9 10648000 10 23393656 11 48228544 12 94196375 13 175616000 14 314432000 15 543338496 16 909853209 17 1481544000 18 2352637000 19 3652264000 20 5554637011 21 8291469824 22 12167000000 23 17576000000 24 25025203125 25 35158608576 26 48787170264