A107755 - cp's OEIS frontend

A107755 Numbers k such that Sum_{j=1..k} Catalan(j) == 0 (mod 3).

n	a(n)
1	2
2	8
3	12
4	26
5	30
6	36
7	38
8	80
9	84
10	90
11	92
12	108
13	110
14	116
15	120
16	242
17	246
18	252
19	254
20	270
21	272
22	278
23	282
24	324
25	326
26	332
27	336
28	350
29	354
30	360
31	362
32	728
33	732
34	738
35	740
36	756
37	758
38	764
39	768
40	810
41	812
42	818
43	822
44	836
45	840
46	846
47	848
48	972
49	974
50	980
51	984
52	998
53	1002
54	1008
55	1010

[2, 8, 12, 26, 30, 36, 38, 80, 84, 90, 92, 108, 110, 116, 120, 242, 246, 252, 254, 270, 272, 278, 282, 324, 326, 332, 336, 350, 354, 360, 362, 728, 732, 738, 740, 756, 758, 764, 768, 810, 812, 818, 822, 836, 840, 846, 848, 972, 974, 980, 984, 998, 1002, 1008, 1010]

cp's OEIS Frontend

A107755 Numbers k such that Sum_{j=1..k} Catalan(j) == 0 (mod 3).

Table of values

List of values