# A344070 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 1 4 0 5 5 6 30 7 77 8 192 9 879 10 3860 11 14102 12 52916 13 217295 14 896252 15 3631970 16 14862624 17 61811422 18 258539856 19 1084119347 20 4568946800 21 19360675922