# A260694 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 4 4 17 5 120 6 915 7 9470 8 104436 9 1432713 10 20709209 11 354493902 12 6343919118 13 130255212146 14 2780356513594 15 66607482974307 16 1651884203936474 17 45240390673466869 18 1278413274487999471 19 39403978336643657797 20 1249821733374560346851 21 42820844948653526713511