# A151352 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 2 4 2 5 13 6 21 7 67 8 231 9 509 10 1947 11 5522 12 16637 13 58030 14 170547 15 579290 16 1896475 17 6081303 18 20884509 19 68398930 20 231286693 21 788124656 22 2649341358 23 9130259705 24 31203913903 25 107304612514 26 372144639423 27 1285741209096 28 4480102404983 29 15625089552273 30 54591352088818 31 191664831925204 32 673088362068478