# A183113 (b-file synthesized from sequence entry) 0 0 1 1 2 3 3 7 4 21 5 61 6 179 7 535 8 1597 9 4781 10 14331 11 42967 12 128869 13 386557 14 1159587 15 3478647 16 10435757 17 31306989 18 93920555 19 281761015 20 845282069 21 2535844733 22 7607531923 23 22822592343 24 68467771805 25 205403307437 26 616209910235 27 1848629712279 28 5545889108805