# A296548 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 6 5 1 6 1 7 28 8 28 9 1 10 1 11 120 12 560 13 120 14 1 15 1 16 496 17 9920 18 9920 19 496 20 1 21 1 22 2016 23 166656 24 714240 25 166656 26 2016 27 1 28 1 29 8128 30 2731008 31 48377856 32 48377856 33 2731008 34 8128 35 1 36 1 37 32640 38 44216320 39 3183575040 40 13158776832 41 3183575040 42 44216320 43 32640 44 1