A199205 - cp's OEIS frontend

A199205 Number of distinct values taken by 4th derivative of x^x^...^x (with n x's and parentheses inserted in all possible ways) at x=1.

n	a(n)
1	1
2	1
3	2
4	4
5	9
6	17
7	30
8	50
9	77
10	113
11	156
12	212
13	279
14	355
15	447
16	560
17	684
18	822
19	985
20	1171
21	1375
22	1599
23	1856
24	2134
25	2445
26	2769
27	3125
28	3519
29	3939
30	4376
31	4857
32	5372
33	5914
34	6484
35	7083
36	7717
37	8411
38	9130
39	9882
40	10683
41	11524
42	12393

[1, 1, 2, 4, 9, 17, 30, 50, 77, 113, 156, 212, 279, 355, 447, 560, 684, 822, 985, 1171, 1375, 1599, 1856, 2134, 2445, 2769, 3125, 3519, 3939, 4376, 4857, 5372, 5914, 6484, 7083, 7717, 8411, 9130, 9882, 10683, 11524, 12393]

cp's OEIS Frontend

A199205 Number of distinct values taken by 4th derivative of x^x^...^x (with n x's and parentheses inserted in all possible ways) at x=1.

Table of values

List of values