A278168 - cp's OEIS frontend

A278168 a(n) = number of integers one less than a prime encountered before reaching 0 when starting from k = ((n+1)^2)-1 and iterating map k -> k - A002828(k).

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	5
7	5
8	8
9	10
10	13
11	15
12	16
13	17
14	19
15	20
16	23
17	25
18	28
19	29
20	31
21	35
22	39
23	40
24	42
25	45
26	47
27	49
28	52
29	56
30	59
31	62
32	66
33	69
34	73
35	76
36	78
37	82
38	87
39	92
40	96
41	100
42	103
43	107
44	112
45	116
46	120
47	123
48	127
49	133
50	137
51	143
52	151
53	155
54	159
55	162
56	167
57	174
58	177
59	184
60	186
61	192
62	198
63	202
64	209
65	216
66	220
67	225
68	232
69	236
70	244
71	250
72	254
73	258
74	261
75	267
76	278
77	282
78	287
79	292
80	301

[0, 1, 1, 3, 4, 5, 5, 8, 10, 13, 15, 16, 17, 19, 20, 23, 25, 28, 29, 31, 35, 39, 40, 42, 45, 47, 49, 52, 56, 59, 62, 66, 69, 73, 76, 78, 82, 87, 92, 96, 100, 103, 107, 112, 116, 120, 123, 127, 133, 137, 143, 151, 155, 159, 162, 167, 174, 177, 184, 186, 192, 198, 202, 209, 216, 220, 225, 232, 236, 244, 250, 254, 258, 261, 267, 278, 282, 287, 292, 301]

cp's OEIS Frontend

A278168 a(n) = number of integers one less than a prime encountered before reaching 0 when starting from k = ((n+1)^2)-1 and iterating map k -> k - A002828(k).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	5
7	5
8	8
9	10
10	13
11	15
12	16
13	17
14	19
15	20
16	23
17	25
18	28
19	29
20	31
21	35
22	39
23	40
24	42
25	45
26	47
27	49
28	52
29	56
30	59
31	62
32	66
33	69
34	73
35	76
36	78
37	82
38	87
39	92
40	96
41	100
42	103
43	107
44	112
45	116
46	120
47	123
48	127
49	133
50	137
51	143
52	151
53	155
54	159
55	162
56	167
57	174
58	177
59	184
60	186
61	192
62	198
63	202
64	209
65	216
66	220
67	225
68	232
69	236
70	244
71	250
72	254
73	258
74	261
75	267
76	278
77	282
78	287
79	292
80	301

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	5
7	5
8	8
9	10
10	13
11	15
12	16
13	17
14	19
15	20
16	23
17	25
18	28
19	29
20	31
21	35
22	39
23	40
24	42
25	45
26	47
27	49
28	52
29	56
30	59
31	62
32	66
33	69
34	73
35	76
36	78
37	82
38	87
39	92
40	96
41	100
42	103
43	107
44	112
45	116
46	120
47	123
48	127
49	133
50	137
51	143
52	151
53	155
54	159
55	162
56	167
57	174
58	177
59	184
60	186
61	192
62	198
63	202
64	209
65	216
66	220
67	225
68	232
69	236
70	244
71	250
72	254
73	258
74	261
75	267
76	278
77	282
78	287
79	292
80	301

n	a(n)
1	0
2	1
3	1
4	3
5	4
6	5
7	5
8	8
9	10
10	13
11	15
12	16
13	17
14	19
15	20
16	23
17	25
18	28
19	29
20	31
21	35
22	39
23	40
24	42
25	45
26	47
27	49
28	52
29	56
30	59
31	62
32	66
33	69
34	73
35	76
36	78
37	82
38	87
39	92
40	96
41	100
42	103
43	107
44	112
45	116
46	120
47	123
48	127
49	133
50	137
51	143
52	151
53	155
54	159
55	162
56	167
57	174
58	177
59	184
60	186
61	192
62	198
63	202
64	209
65	216
66	220
67	225
68	232
69	236
70	244
71	250
72	254
73	258
74	261
75	267
76	278
77	282
78	287
79	292
80	301