# A019194 (b-file synthesized from sequence entry) 3 0 4 0 5 2 6 8 7 4 8 26 9 54 10 126 11 258 12 770 13 1568 14 4030 15 9560 16 25381 17 58328 18 154310 19 382514 20 1002989 21 2515622 22 6687152 23 17226920 24 45770045 25 119696108 26 320324918 27 846684628 28 2271206729 29 6053095938 30 16284572288 31 43613979158