A099628 - cp's OEIS frontend

A099628 Numbers m where m-th Catalan number A000108(m) = binomial(2m,m)/(m+1) is divisible by 2 but not by 4, i.e., where A048881(m) = 1.

n	a(n)
1	2
2	4
3	5
4	8
5	9
6	11
7	16
8	17
9	19
10	23
11	32
12	33
13	35
14	39
15	47
16	64
17	65
18	67
19	71
20	79
21	95
22	128
23	129
24	131
25	135
26	143
27	159
28	191
29	256
30	257
31	259
32	263
33	271
34	287
35	319
36	383
37	512
38	513
39	515
40	519
41	527
42	543
43	575
44	639
45	767
46	1024
47	1025
48	1027
49	1031
50	1039
51	1055
52	1087
53	1151
54	1279
55	1535
56	2048

[2, 4, 5, 8, 9, 11, 16, 17, 19, 23, 32, 33, 35, 39, 47, 64, 65, 67, 71, 79, 95, 128, 129, 131, 135, 143, 159, 191, 256, 257, 259, 263, 271, 287, 319, 383, 512, 513, 515, 519, 527, 543, 575, 639, 767, 1024, 1025, 1027, 1031, 1039, 1055, 1087, 1151, 1279, 1535, 2048]

cp's OEIS Frontend

A099628 Numbers m where m-th Catalan number A000108(m) = binomial(2m,m)/(m+1) is divisible by 2 but not by 4, i.e., where A048881(m) = 1.

Table of values

List of values