# A148588 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 6 4 20 5 55 6 184 7 591 8 2022 9 7046 10 24888 11 90207 12 328888 13 1221276 14 4569389 15 17273315 16 65853981 17 252762675 18 977445345 19 3800281869 20 14860432632 21 58393802535 22 230495750196 23 913747733984 24 3635844012953 25 14520010283040 26 58176362311273 27 233814078106841 28 942421272344815 29 3808670709979013