# A337870 (b-file synthesized from sequence entry) 0 1 1 2 2 16 3 166 4 1934 5 24076 6 312906 7 4191822 8 57433950 9 800740450 10 11319707546 11 161841539812 12 2335765140994 13 33979681977530 14 497696233487200 15 7332776490675630 16 108595186409772174 17 1615573668169487898 18 24132221328987714066