# A217492 (b-file synthesized from sequence entry) 1 0 2 1 3 3 4 4 5 9 6 18 7 49 8 57 9 67 10 69 11 106 12 126 13 258 14 583 15 1221 16 1366 17 4311 18 11361 19 12621 20 14964 21 16017 22 22467 23 25434 24 45094 25 51051 26 89113