# A027165 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 10 4 39 5 61 6 180 7 300 8 1157 9 1823 10 5502 11 9282 12 35911 13 57101 14 174312 15 296536 16 1147657 17 1837307 18 5643506 19 9657582 20 37349067 21 60103305 22 185313180 23 318533124 24 1230555661 25 1988344759 26 6145979174 27 10601082970 28 40907870479