# A272064 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 35 6 102 7 332 8 1205 9 4796 10 20640 11 95197 12 467694 13 2435804 14 13394117 15 77490260 16 470198899 17 2984034004 18 19757370537 19 136171758636 20 975002124101 21 7239322944625 22 55648169854405 23 442195755123607 24 3627392029179270 25 30679238282421267 26 267215329668444337