# A375099 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 3 5 6 6 12 7 26 8 57 9 141 10 333 11 885 12 2259 13 6391 14 17302 15 51685 16 147937 17 460561 18 1389093 19 4504136 20 14127767 21 47719998 22 155559696 23 542178148 24 1835105103 25 6600158865 26 23035501468 27 85428655084 28 307266398440 29 1168951871972 30 4331125790382 31 16897269822235