# A095018 (b-file synthesized from sequence entry) 1 1 2 0 3 2 4 4 5 17 6 28 7 189 8 531 9 1990 10 5747 11 23902 12 76658 13 291478 14 982793 15 3677580 16 13214719 17 49161612 18 177190667 19 664806798 20 2443387945