# A008426 (b-file synthesized from sequence entry) 0 1 1 0 2 20 3 0 4 180 5 1024 6 960 7 0 8 3380 9 10240 10 8424 11 0 12 16320 13 46080 14 28800 15 0 16 52020 17 133120 18 88660 19 0 20 129064 21 307200 22 175680 23 0 24 262080 25 626688 26 386920 27 0 28 489600 29 1131520 30 600960 31 0 32 840500