# A148948 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 9 4 30 5 102 6 395 7 1484 8 5924 9 23995 10 98866 11 414472 12 1762159 13 7556734 14 32822931 15 143522044 16 632885962 17 2810022936 18 12548457073 19 56363964503 20 254407136619 21 1153474144543 22 5252345607822 23 24004848475242 24 110104801267601 25 506661531557914 26 2338453051900202 27 10823603756292646 28 50226963438888453