# A116972 (b-file synthesized from sequence entry) 0 1 1 21 2 85 3 281 4 873 5 2653 6 7997 7 24033 8 72145 9 216485 10 649509 11 1948585 12 5845817 13 17537517 14 52612621 15 157837937 16 473513889 17 1420541749 18 4261625333 19 12784876089 20 38354628361 21 115063885181 22 345191655645 23 1035574967041