# A118892 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 1 5 4 6 12 7 30 8 70 9 156 10 339 11 722 12 1515 13 3140 14 6444 15 13116 16 26513 17 53280 18 106530 19 212062 20 420503 21 830964 22 1637055 23 3216240 24 6303099 25 12324816 26 24049953 27 46841550 28 91074760 29 176796340 30 342696000 31 663363750 32 1282457260 33 2476394580