# A088160 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 30 4 219 5 2029 6 21951 7 266508 8 3555679 9 51459059 10 800597860 11 13299687789 12 234649789192 13 4377700776217 14 86042611873972 15 1775987427897604 16 38389651084747947 17 866887176020724213 18 20404374490338189930