# A000633 (b-file synthesized from sequence entry) 4 1 5 1 6 3 7 7 8 18 9 42 10 109 11 269 12 691 13 1759 14 4542 15 11733 16 30559 17 79743 18 209136 19 549959 20 1451178 21 3838925 22 10182703 23 27069940 24 72121696 25 192527888 26 514908269 27 1379454526 28 3701556642 29 9947456861 30 26770280299 31 72138803942 32 194638086892 33 525773470041 34 1421850523472