# A026685 (b-file synthesized from sequence entry) 1 1 2 5 3 17 4 87 5 324 6 1707 7 6595 8 35300 9 139114 10 751901 11 3000177 12 16322561 13 65684626 14 359049028 15 1453825024 16 7975236698 17 32444454286 18 178473218093 19 728737293093 20 4017589328269 21 16453338330248 22 90873261482607 23 373067000217563