# A097506 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 4 4 5 5 7 6 8 7 9 8 11 9 12 10 14 11 15 12 16 13 18 14 19 15 21 16 22 17 24 18 25 19 26 20 28 21 29 22 31 23 32 24 33 25 35