# A360856 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 16 5 48 6 140 7 424 8 1280 9 3920 10 12032 11 37184 12 115248 13 358624 14 1118784 15 3499584 16 10969344 17 34450944 18 108377984 19 341465344 20 1077300224 21 3403006464 22 10761447424 23 34065967104 24 107937899264 25 342293526016 26 1086339120128 27 3450236511232 28 10965437349888