# A102948 (b-file synthesized from sequence entry) 1 1 2 3 3 7 4 13 5 24 6 30 7 48 8 52 9 163 10 175 11 219 12 228 13 261 14 754 15 951 16 1344 17 1573 18 3294 19 3523 20 14161 21 70794