A002845 - cp's OEIS frontend

A002845 Number of distinct values taken by 2^2^...^2 (with n 2's and parentheses inserted in all possible ways).

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	8
7	17
8	36
9	78
10	171
11	379
12	851
13	1928
14	4396
15	10087
16	23273
17	53948
18	125608
19	293543
20	688366
21	1619087
22	3818818
23	9029719
24	21400706
25	50828664
26	120963298
27	288405081
28	688821573
29	1647853491
30	3948189131
31	9473431479

[1, 1, 1, 2, 4, 8, 17, 36, 78, 171, 379, 851, 1928, 4396, 10087, 23273, 53948, 125608, 293543, 688366, 1619087, 3818818, 9029719, 21400706, 50828664, 120963298, 288405081, 688821573, 1647853491, 3948189131, 9473431479]

cp's OEIS Frontend

A002845 Number of distinct values taken by 2^2^...^2 (with n 2's and parentheses inserted in all possible ways).

Table of values

List of values