# A026336 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 10 5 15 6 50 7 77 8 266 9 414 10 1452 11 2277 12 8073 13 12726 14 45460 15 71940 16 258434 17 410193 18 1479986 19 2354651 20 8525205 21 13589730 22 49342636 23 78780957 24 286721450 25 458396900 26 1671668520 27 2675641815 28 9774222930 29 15659853579 30 57291319170 31 91868450400