# A204558 (b-file synthesized from sequence entry) 1 1 2 6 3 45 4 120 5 325 6 630 7 1225 8 2016 9 3321 10 4950 11 7381 12 10296 13 14365 14 19110 15 25425 16 32640 17 41905 18 52326 19 65341 20 79800 21 97461 22 116886 23 140185 24 165600 25 195625 26 228150 27 266085 28 306936 29 354061 30 404550 31 462241 32 523776 33 593505 34 667590 35 750925 36 839160 37 937765