# A293910 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 8 5 11 6 13 7 17 8 28 9 46 10 67 11 136 12 536 13 619 14 746 15 2420 16 2672 17 8228 18 10861 19 13424 20 16047 21 18075 22 37720 23 56371 24 75055