48

Arbor (48) = 70

48 = 2*2*2*2*3

The 70 possible trees:

1. (2,(2,(2,(2,3))))

2. (2,(2,(2,(3,2))))

3. (2,(2,(3,(2,2))))

4. (2,(2,((2,2),3)))

5. (2,(2,((2,3),2)))

6. (2,(2,((3,2),2)))

7. (2,(3,(2,(2,2))))

8. (2,(3,((2,2),2)))

9. (2,((2,2),(2,3)))

10. (2,((2,2),(3,2)))

11. (2,((2,3),(2,2)))

12. (2,((3,2),(2,2)))

13. (2,((2,(2,2)),3))

14. (2,(((2,2),2),3))

15. (2,((2,(2,3)),2))

16. (2,((2,(3,2)),2))

17. (2,((3,(2,2)),2))

18. (2,(((2,2),3),2))

19. (2,(((2,3),2),2))

20. (2,(((3,2),2),2))

21. (3,(2,(2,(2,2))))

22. (3,(2,((2,2),2)))

23. (3,((2,2),(2,2)))

24. (3,((2,(2,2)),2))

25. (3,(((2,2),2),2))

26. ((2,2),(2,(2,3)))

27. ((2,2),(2,(3,2)))

28. ((2,2),(3,(2,2)))

29. ((2,2),((2,2),3))

30. ((2,2),((2,3),2))

31. ((2,2),((3,2),2))

32. ((2,3),(2,(2,2)))

33. ((2,3),((2,2),2))

34. ((3,2),(2,(2,2)))

35. ((3,2),((2,2),2))

36. ((2,(2,2)),(2,3))

37. ((2,(2,2)),(3,2))

38. (((2,2),2),(2,3))

39. (((2,2),2),(3,2))

40. ((2,(2,3)),(2,2))

41. ((2,(3,2)),(2,2))

42. ((3,(2,2)),(2,2))

43. (((2,2),3),(2,2))

44. (((2,3),2),(2,2))

45. (((3,2),2),(2,2))

46. ((2,(2,(2,2))),3)

47. ((2,((2,2),2)),3)

48. (((2,2),(2,2)),3)

49. (((2,(2,2)),2),3)

50. ((((2,2),2),2),3)

51. ((2,(2,(2,3))),2)

52. ((2,(2,(3,2))),2)

53. ((2,(3,(2,2))),2)

54. ((2,((2,2),3)),2)

55. ((2,((2,3),2)),2)

56. ((2,((3,2),2)),2)

57. ((3,(2,(2,2))),2)

58. ((3,((2,2),2)),2)

59. (((2,2),(2,3)),2)

60. (((2,2),(3,2)),2)

61. (((2,3),(2,2)),2)

62. (((3,2),(2,2)),2)

63. (((2,(2,2)),3),2)

64. ((((2,2),2),3),2)

65. (((2,(2,3)),2),2)

66. (((2,(3,2)),2),2)

67. (((3,(2,2)),2),2)

68. ((((2,2),3),2),2)

69. ((((2,3),2),2),2)

70. ((((3,2),2),2),2)