# A019196 (b-file synthesized from sequence entry) 3 0 4 0 5 4 6 6 7 8 8 22 9 60 10 102 11 262 12 694 13 1564 14 3552 15 9430 16 23423 17 57108 18 144774 19 374118 20 953824 21 2460356 22 6427240 23 16851190 24 44243785 25 117119492 26 311098391 27 828359180 28 2211105633 29 5921156854 30 15876753164 31 42641417130