# A276265 (b-file synthesized from sequence entry) 0 1 1 8 2 42 3 204 4 972 5 4608 6 21816 7 103248 8 488592 9 2312064 10 10940832 11 51772608 12 244990656 13 1159308288 14 5485905792 15 25959585024 16 122842075392 17 581294942208 18 2750717200896 19 13016533552128 20 61594898107392 21 291470187331584 22 1379251735345152 23 6526689288081408 24 30884625316417536