# A153667 (b-file synthesized from sequence entry) 1 2 2 2 3 2 4 2 5 3 6 14 7 31 8 33 9 69 10 137 11 222 12 318 13 901 14 1772 15 2747 16 12347 17 16540 18 18198 19 135794 20 222246 21 570361 22 2134829 23 6901329 24 75503109 25 814558605