# A101352 (b-file synthesized from sequence entry) 0 0 1 2 2 6 3 15 4 33 5 69 6 140 7 280 8 556 9 1101 10 2179 11 4315 12 8554 13 16978 14 33738 15 67115 16 133637 17 266305 18 531032 19 1059500 20 2114840 21 4222937 22 8434951 23 16852215 24 33675798 25 67305254 26 134535510 27 268949655 28 537702921 29 1075088061 30 2149661924