# A093566 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 1 5 20 6 120 7 455 8 1330 9 3276 10 7140 11 14190 12 26235 13 45760 14 76076 15 121485 16 187460 17 280840 18 410040 19 585276 20 818805 21 1125180 22 1521520 23 2027795 24 2667126 25 3466100 26 4455100 27 5668650 28 7145775 29 8930376 30 11071620 31 13624345 32 16649480 33 20214480