# A114509 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 37 6 111 7 345 8 1104 9 3611 10 12016 11 40548 12 138414 13 477076 14 1657956 15 5802920 16 20436910 17 72369903 18 257518806 19 920333307 20 3302003826 21 11888979066 22 42944410207 23 155576009845 24 565127618392 25 2057903975752 26 7510967300206