# A335098 (b-file synthesized from sequence entry) 1 3 2 5 3 11 4 23 5 51 6 109 7 251 8 549 9 1291 10 2981 11 7067 12 16571 13 39601 14 94195 15 226997 16 544687 17 1320935 18 3194399 19 7797891 20 18996977 21 46651387 22 114353905 23 282109663 24 694793903 25 1720327219 26 4253521985 27 10565387267 28 26213565665 29 65300013637 30 162516950805 31 405892537979