# A026891 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 4 5 12 6 17 7 51 8 74 9 224 10 328 11 1008 12 1478 13 4630 14 6767 15 21663 16 31472 17 103100 18 148642 19 498520 20 712648 21 2446218 22 3466398 23 12167456 24 17093556 25 61276838 26 85380372 27 312096590 28 431554188 29 1605820974 30 2205077509