# A352789 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 9 4 17 5 31 6 109 7 251 8 553 9 1527 10 3721 11 8799 12 22521 13 55607 14 135161 15 337655 16 835305 17 2051719 18 5086601 19 12580007 20 31019689 21 76724327 22 189674697 23 468351815 24 1157626473 25 2861142183 26 7068302665 27 17467362631 28 43166610985 29 106658791143 30 263564545289 31 651307249159