# A054151 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 7 5 12 6 21 7 39 8 69 9 130 10 240 11 451 12 854 13 1620 14 3101 15 5941 16 11443 17 22080 18 42724 19 82835 20 160914 21 313149 22 610230 23 1190802 24 2326448 25 4550161 26 8908095 27 17455391 28 34232368 29 67184426 30 131949378 31 259313689 32 509925468 33 1003302084