# A108079 (b-file synthesized from sequence entry) 0 1 1 5 2 31 3 195 4 1231 5 7798 6 49596 7 316767 8 2031535 9 13079352 10 84504355 11 547707394 12 3559971156 13 23197272140 14 151495214536 15 991348425879 16 6498704675439 17 42669773400220 18 280567674704625 19 1847219933032320 20 12176178948740895 21 80346934651630500