A022818 - cp's OEIS frontend

A022818 Square array read by antidiagonals: A(n,k) = number of terms in the n-th derivative of a function composed with itself k times (n, k >= 1).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	3
10	1
11	1
12	4
13	6
14	5
15	1
16	1
17	5
18	10
19	13
20	7
21	1
22	1
23	6
24	15
25	26
26	23
27	11
28	1
29	1
30	7
31	21
32	45
33	55
34	44
35	15
36	1
37	1
38	8
39	28
40	71
41	110
42	121
43	74
44	22
45	1
46	1
47	9
48	36
49	105
50	196
51	271
52	237
53	129
54	30
55	1
56	1
57	10
58	45
59	148
60	322
61	532
62	599
63	468
64	210
65	42
66	1
67	1
68	11
69	55
70	201
71	498
72	952
73	1301
74	1309
75	867
76	345
77	56
78	1

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 6, 5, 1, 1, 5, 10, 13, 7, 1, 1, 6, 15, 26, 23, 11, 1, 1, 7, 21, 45, 55, 44, 15, 1, 1, 8, 28, 71, 110, 121, 74, 22, 1, 1, 9, 36, 105, 196, 271, 237, 129, 30, 1, 1, 10, 45, 148, 322, 532, 599, 468, 210, 42, 1, 1, 11, 55, 201, 498, 952, 1301, 1309, 867, 345, 56, 1]

cp's OEIS Frontend

A022818 Square array read by antidiagonals: A(n,k) = number of terms in the n-th derivative of a function composed with itself k times (n, k >= 1).

Table of values

List of values