# A217381 (b-file synthesized from sequence entry) 1 2 2 6 3 10 4 26 5 42 6 58 7 68 8 196 9 266 10 602 11 1170 12 1288 13 1290 14 2990 15 4110 16 6292 17 7446 18 36928 19 57490 20 65478 21 78570 22 188832