# A218680 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 16 4 111 5 911 6 8622 7 91414 8 1067579 9 13564195 10 185687381 11 2718184470 12 42288343176 13 695667651368 14 12049465530936 15 218945489692574 16 4160440403683643 17 82448824370010887 18 1699889286488298603 19 36384381642357676480 20 806926050321577391347 21 18510872795071148287531