# A148133 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 11 5 28 6 79 7 232 8 736 9 2295 10 7511 11 25302 12 86950 13 300370 14 1065759 15 3839576 16 13953744 17 51197935 18 190807055 19 717234202 20 2712764266 21 10353167908 22 39891162812 23 154541802382 24 602000096362 25 2362123596696 26 9324852880747 27 36963162522470 28 147246486670901 29 589797809248183 30 2372248128513882