A261094 - cp's OEIS frontend

A261094 Left inverse of A219640: If n = A219640(k) for some k, then a(n) = k, otherwise zero.

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	4
6	0
7	5
8	6
9	7
10	0
11	0
12	8
13	9
14	10
15	0
16	11
17	12
18	0
19	0
20	13
21	14
22	15
23	0
24	16
25	17
26	0
27	18
28	19
29	20
30	0
31	0
32	0
33	21
34	22
35	23
36	0
37	24
38	25
39	0
40	26
41	27
42	28
43	0
44	0
45	29
46	30
47	31
48	0
49	32
50	33
51	0
52	0
53	0
54	34
55	35
56	36
57	0
58	37
59	38
60	0
61	39
62	40
63	41
64	0
65	0
66	42
67	43
68	44
69	0
70	45
71	46
72	0
73	0
74	47
75	48
76	49
77	0
78	50
79	51
80	0
81	52
82	53
83	54
84	0
85	0
86	0
87	0
88	55
89	56
90	57
91	0
92	58
93	59
94	0
95	60
96	61
97	62

[0, 1, 2, 0, 3, 4, 0, 5, 6, 7, 0, 0, 8, 9, 10, 0, 11, 12, 0, 0, 13, 14, 15, 0, 16, 17, 0, 18, 19, 20, 0, 0, 0, 21, 22, 23, 0, 24, 25, 0, 26, 27, 28, 0, 0, 29, 30, 31, 0, 32, 33, 0, 0, 0, 34, 35, 36, 0, 37, 38, 0, 39, 40, 41, 0, 0, 42, 43, 44, 0, 45, 46, 0, 0, 47, 48, 49, 0, 50, 51, 0, 52, 53, 54, 0, 0, 0, 0, 55, 56, 57, 0, 58, 59, 0, 60, 61, 62]

cp's OEIS Frontend

A261094 Left inverse of A219640: If n = A219640(k) for some k, then a(n) = k, otherwise zero.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	4
6	0
7	5
8	6
9	7
10	0
11	0
12	8
13	9
14	10
15	0
16	11
17	12
18	0
19	0
20	13
21	14
22	15
23	0
24	16
25	17
26	0
27	18
28	19
29	20
30	0
31	0
32	0
33	21
34	22
35	23
36	0
37	24
38	25
39	0
40	26
41	27
42	28
43	0
44	0
45	29
46	30
47	31
48	0
49	32
50	33
51	0
52	0
53	0
54	34
55	35
56	36
57	0
58	37
59	38
60	0
61	39
62	40
63	41
64	0
65	0
66	42
67	43
68	44
69	0
70	45
71	46
72	0
73	0
74	47
75	48
76	49
77	0
78	50
79	51
80	0
81	52
82	53
83	54
84	0
85	0
86	0
87	0
88	55
89	56
90	57
91	0
92	58
93	59
94	0
95	60
96	61
97	62

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	4
6	0
7	5
8	6
9	7
10	0
11	0
12	8
13	9
14	10
15	0
16	11
17	12
18	0
19	0
20	13
21	14
22	15
23	0
24	16
25	17
26	0
27	18
28	19
29	20
30	0
31	0
32	0
33	21
34	22
35	23
36	0
37	24
38	25
39	0
40	26
41	27
42	28
43	0
44	0
45	29
46	30
47	31
48	0
49	32
50	33
51	0
52	0
53	0
54	34
55	35
56	36
57	0
58	37
59	38
60	0
61	39
62	40
63	41
64	0
65	0
66	42
67	43
68	44
69	0
70	45
71	46
72	0
73	0
74	47
75	48
76	49
77	0
78	50
79	51
80	0
81	52
82	53
83	54
84	0
85	0
86	0
87	0
88	55
89	56
90	57
91	0
92	58
93	59
94	0
95	60
96	61
97	62

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	4
6	0
7	5
8	6
9	7
10	0
11	0
12	8
13	9
14	10
15	0
16	11
17	12
18	0
19	0
20	13
21	14
22	15
23	0
24	16
25	17
26	0
27	18
28	19
29	20
30	0
31	0
32	0
33	21
34	22
35	23
36	0
37	24
38	25
39	0
40	26
41	27
42	28
43	0
44	0
45	29
46	30
47	31
48	0
49	32
50	33
51	0
52	0
53	0
54	34
55	35
56	36
57	0
58	37
59	38
60	0
61	39
62	40
63	41
64	0
65	0
66	42
67	43
68	44
69	0
70	45
71	46
72	0
73	0
74	47
75	48
76	49
77	0
78	50
79	51
80	0
81	52
82	53
83	54
84	0
85	0
86	0
87	0
88	55
89	56
90	57
91	0
92	58
93	59
94	0
95	60
96	61
97	62