# A006693 (b-file synthesized from sequence entry) 1 2 2 4 3 5 4 7 5 8 6 10 7 25 8 53 9 62 10 134 11 574 12 2431 13 13147 14 27167 15 229073 16 315416 17 435474 18 771789 19 1522716 20 3853889 21 7878986 22 7922488 23 8844776 24 9182596 25 9388467 26 14781524 27 135097360 28 1374449987 29 1561240840 30 4408239956 31 11166053604 32 12014224315