A231236 - cp's OEIS frontend

A231236 Number of years after which it is either not possible to have a date falling on same day of the week, or the entire year can have the same calendar, in the Gregorian calendar.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	23
23	24
24	25
25	26
26	27
27	28
28	29
29	30
30	31
31	32
32	34
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	47
45	48
46	49
47	50
48	51
49	52
50	53
51	54
52	55
53	56
54	57
55	58
56	59
57	60
58	62
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75

[0, 1, 2, 3, 4, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75]

cp's OEIS Frontend

A231236 Number of years after which it is either not possible to have a date falling on same day of the week, or the entire year can have the same calendar, in the Gregorian calendar.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	23
23	24
24	25
25	26
26	27
27	28
28	29
29	30
30	31
31	32
32	34
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	47
45	48
46	49
47	50
48	51
49	52
50	53
51	54
52	55
53	56
54	57
55	58
56	59
57	60
58	62
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	23
23	24
24	25
25	26
26	27
27	28
28	29
29	30
30	31
31	32
32	34
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	47
45	48
46	49
47	50
48	51
49	52
50	53
51	54
52	55
53	56
54	57
55	58
56	59
57	60
58	62
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	21
21	22
22	23
23	24
24	25
25	26
26	27
27	28
28	29
29	30
30	31
31	32
32	34
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	47
45	48
46	49
47	50
48	51
49	52
50	53
51	54
52	55
53	56
54	57
55	58
56	59
57	60
58	62
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75