# A290031 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 16 4 128 5 640 6 2560 7 8960 8 28672 9 86016 10 245760 11 675840 12 1802240 13 4685824 14 11927552 15 29818880 16 73400320 17 178257920 18 427819008 19 1016070144 20 2390753280 21 5578424320 22 12918456320 23 29712449536 24 67914170368 25 154350387200 26 348966092800 27 785173708800 28 1758789107712