# A141397 (b-file synthesized from sequence entry) 0 1 1 5 2 19 3 62 4 193 5 587 6 1771 7 5324 8 15985 9 47969 10 143923 11 431786 12 1295377 13 3886151 14 11658475 15 34975448 16 104926369 17 314779133 18 944337427 19 2833012310 20 8499036961 21 25497110915 22 76491332779 23 229473998372 24 688421995153 25 2065265985497 26 6195797956531 27 18587393869634