A199085 - cp's OEIS frontend

A199085 Number of distinct values taken by 3rd 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	7
6	11
7	15
8	20
9	26
10	32
11	39
12	47
13	55
14	64
15	74
16	84
17	95
18	107
19	119
20	132
21	146
22	160
23	175
24	191
25	207
26	224
27	242
28	260
29	279
30	299
31	319
32	340
33	362
34	384
35	407
36	431
37	455
38	480
39	506
40	532
41	559
42	587
43	615
44	644
45	674
46	704
47	735
48	767
49	799
50	832
51	866
52	900
53	935
54	971
55	1007
56	1044

[1, 1, 2, 4, 7, 11, 15, 20, 26, 32, 39, 47, 55, 64, 74, 84, 95, 107, 119, 132, 146, 160, 175, 191, 207, 224, 242, 260, 279, 299, 319, 340, 362, 384, 407, 431, 455, 480, 506, 532, 559, 587, 615, 644, 674, 704, 735, 767, 799, 832, 866, 900, 935, 971, 1007, 1044]

cp's OEIS Frontend

A199085 Number of distinct values taken by 3rd 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