# A049463 (b-file synthesized from sequence entry) 2 1 3 2 4 7 5 34 6 219 7 1787 8 17936 9 216169 10 3069552 11 50562672 12 953877927 13 20389082457 14 489301660818 15 13080166471127 16 386841424466953 17 12581201258360820 18 447574544428423114 19 17333939484785264282 20 727718718839603466267