# A172100 (b-file synthesized from sequence entry) 1 3 2 5 3 7 4 9 5 11 6 13 7 15 8 17 9 19 10 21 11 23 12 25 13 1 14 3 15 5 16 7 17 9 18 11 19 13 20 15 21 17 22 19 23 21 24 23 25 25 26 1