# A002289 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 0 5 0 6 0 7 253 8 506 9 0 10 0 11 1288 12 1288 13 0 14 0 15 506 16 253 17 0 18 0 19 0 20 0 21 0 22 0 23 1