A230998 - cp's OEIS frontend

A230998 Number of years after which it is not possible to have a date falling on the same day of the week, in the Gregorian calendar.

n	a(n)
1	1
2	2
3	3
4	4
5	8
6	9
7	10
8	13
9	14
10	15
11	16
12	19
13	20
14	21
15	24
16	25
17	26
18	27
19	30
20	31
21	32
22	36
23	37
24	38
25	41
26	42
27	43
28	44
29	47
30	48
31	49
32	52
33	53
34	54
35	55
36	58
37	59
38	60
39	64
40	65
41	66
42	69
43	70
44	71
45	72
46	75
47	76
48	77
49	80
50	81
51	82
52	83
53	86
54	87
55	88
56	92
57	93
58	94
59	97
60	98
61	99
62	100
63	103
64	104
65	105
66	109
67	110
68	111

[1, 2, 3, 4, 8, 9, 10, 13, 14, 15, 16, 19, 20, 21, 24, 25, 26, 27, 30, 31, 32, 36, 37, 38, 41, 42, 43, 44, 47, 48, 49, 52, 53, 54, 55, 58, 59, 60, 64, 65, 66, 69, 70, 71, 72, 75, 76, 77, 80, 81, 82, 83, 86, 87, 88, 92, 93, 94, 97, 98, 99, 100, 103, 104, 105, 109, 110, 111]

cp's OEIS Frontend

A230998 Number of years after which it is not possible to have a date falling on the same day of the week, in the Gregorian calendar.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	8
6	9
7	10
8	13
9	14
10	15
11	16
12	19
13	20
14	21
15	24
16	25
17	26
18	27
19	30
20	31
21	32
22	36
23	37
24	38
25	41
26	42
27	43
28	44
29	47
30	48
31	49
32	52
33	53
34	54
35	55
36	58
37	59
38	60
39	64
40	65
41	66
42	69
43	70
44	71
45	72
46	75
47	76
48	77
49	80
50	81
51	82
52	83
53	86
54	87
55	88
56	92
57	93
58	94
59	97
60	98
61	99
62	100
63	103
64	104
65	105
66	109
67	110
68	111

n	a(n)
1	1
2	2
3	3
4	4
5	8
6	9
7	10
8	13
9	14
10	15
11	16
12	19
13	20
14	21
15	24
16	25
17	26
18	27
19	30
20	31
21	32
22	36
23	37
24	38
25	41
26	42
27	43
28	44
29	47
30	48
31	49
32	52
33	53
34	54
35	55
36	58
37	59
38	60
39	64
40	65
41	66
42	69
43	70
44	71
45	72
46	75
47	76
48	77
49	80
50	81
51	82
52	83
53	86
54	87
55	88
56	92
57	93
58	94
59	97
60	98
61	99
62	100
63	103
64	104
65	105
66	109
67	110
68	111

n	a(n)
1	1
2	2
3	3
4	4
5	8
6	9
7	10
8	13
9	14
10	15
11	16
12	19
13	20
14	21
15	24
16	25
17	26
18	27
19	30
20	31
21	32
22	36
23	37
24	38
25	41
26	42
27	43
28	44
29	47
30	48
31	49
32	52
33	53
34	54
35	55
36	58
37	59
38	60
39	64
40	65
41	66
42	69
43	70
44	71
45	72
46	75
47	76
48	77
49	80
50	81
51	82
52	83
53	86
54	87
55	88
56	92
57	93
58	94
59	97
60	98
61	99
62	100
63	103
64	104
65	105
66	109
67	110
68	111