# A121515 (b-file synthesized from sequence entry) 1 3 2 33 3 315 4 26163 5 235953 6 2125035 7 19129689 8 172180323 9 1549662273 10 13947078555 11 125524061289 12 1129717614483 13 10167461718993 14 91507165036875 15 823564514029689 16 7412080712360643 17 66708726669526113 18 600378540800575995 19 5403406869529706889 20 48630661832740930803