# A326006 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 10 4 35 5 110 6 484 7 2090 8 10449 9 54526 10 306394 11 1817190 12 11357273 13 74488856 14 510662890 15 3649746072 16 27120964497 17 209070202378 18 1668632739832 19 13763654492458 20 117143535623438 21 1027274860573646 22 9269762507422848 23 85969437563219710 24 818533062206441679 25 7992935182604293880 26 79974062362514607510 27 819199175961485536540 28 8583780760842171037456