# A350654 (b-file synthesized from sequence entry) 1 2 2 3 3 8 4 15 5 63 6 120 7 440 8 945 9 2079 10 4095 11 21735 12 98175 13 133056 14 395199 15 338625 16 1890945 17 3501576 18 8390304 19 35820225 20 126775935 21 149848335 22 879207616 23 302464800