# A375612 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 2 4 7 5 25 6 6 7 22 8 81 9 299 10 24 11 90 12 338 13 1271 14 4785 15 120 16 456 17 1734 18 6598 19 25121 20 95699 21 720 22 2760 23 10584 24 40602 25 155810 26 598119 27 2296777 28 5040 29 19440 30 75000 31 289416 32 1117062 33 4312438 34 16651633 35 64309755 36 40320 37 156240 38 605520 39 2347080 40 9098904 41 35278554 42 136801778 43 530555479 44 2057912161