# A075153 (b-file synthesized from sequence entry) 0 318 1 1071 2 5040 3 5985 4 10710 5 20400 6 24225 7 43350 8 81600 9 85425 10 165750 11 327360 12 342705 13 664950 14 1309440 15 1324785 16 2629110 17 5241600 18 5303025 19 10524150 20 20966400 21 21027825 22 41973750 23 83880960 24 84126705 25 167925750 26 335523840