A306470 - cp's OEIS frontend

A306470 a(0) = 0; for n > 0, if the number of blanks already in the sequence is greater than or equal to n, n is filled in at the n-th blank counting from the end of the sequence; otherwise n is added to the end of the sequence followed by n blanks.

n	a(n)
0	0
1	1
2	3
3	2
4	9
5	5
6	4
7	120
8	8
9	14
10	7
11	6
12	22
13	13
14	34
15	12
16	21
17	11
18	10
19	52
20	20
21	33
22	19
23	79
24	18
25	32
26	17
27	51
28	16
29	15
30	31
31	181
32	30
33	50
34	29
35	78
36	28
37	49
38	27
39	119
40	26
41	48
42	25
43	77
44	24
45	23
46	47
47	615
48	46
49	76
50	45
51	118
52	44
53	75
54	43
55	180
56	42
57	74
58	41
59	117
60	40
61	73

[0, 1, 3, 2, 9, 5, 4, 120, 8, 14, 7, 6, 22, 13, 34, 12, 21, 11, 10, 52, 20, 33, 19, 79, 18, 32, 17, 51, 16, 15, 31, 181, 30, 50, 29, 78, 28, 49, 27, 119, 26, 48, 25, 77, 24, 23, 47, 615, 46, 76, 45, 118, 44, 75, 43, 180, 42, 74, 41, 117, 40, 73]

cp's OEIS Frontend

A306470 a(0) = 0; for n > 0, if the number of blanks already in the sequence is greater than or equal to n, n is filled in at the n-th blank counting from the end of the sequence; otherwise n is added to the end of the sequence followed by n blanks.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	2
4	9
5	5
6	4
7	120
8	8
9	14
10	7
11	6
12	22
13	13
14	34
15	12
16	21
17	11
18	10
19	52
20	20
21	33
22	19
23	79
24	18
25	32
26	17
27	51
28	16
29	15
30	31
31	181
32	30
33	50
34	29
35	78
36	28
37	49
38	27
39	119
40	26
41	48
42	25
43	77
44	24
45	23
46	47
47	615
48	46
49	76
50	45
51	118
52	44
53	75
54	43
55	180
56	42
57	74
58	41
59	117
60	40
61	73

n	a(n)
0	0
1	1
2	3
3	2
4	9
5	5
6	4
7	120
8	8
9	14
10	7
11	6
12	22
13	13
14	34
15	12
16	21
17	11
18	10
19	52
20	20
21	33
22	19
23	79
24	18
25	32
26	17
27	51
28	16
29	15
30	31
31	181
32	30
33	50
34	29
35	78
36	28
37	49
38	27
39	119
40	26
41	48
42	25
43	77
44	24
45	23
46	47
47	615
48	46
49	76
50	45
51	118
52	44
53	75
54	43
55	180
56	42
57	74
58	41
59	117
60	40
61	73

n	a(n)
0	0
1	1
2	3
3	2
4	9
5	5
6	4
7	120
8	8
9	14
10	7
11	6
12	22
13	13
14	34
15	12
16	21
17	11
18	10
19	52
20	20
21	33
22	19
23	79
24	18
25	32
26	17
27	51
28	16
29	15
30	31
31	181
32	30
33	50
34	29
35	78
36	28
37	49
38	27
39	119
40	26
41	48
42	25
43	77
44	24
45	23
46	47
47	615
48	46
49	76
50	45
51	118
52	44
53	75
54	43
55	180
56	42
57	74
58	41
59	117
60	40
61	73