A055456 - cp's OEIS frontend

A055456 a(n) is the smallest number which is not the sum of exactly 1 or of n earlier terms.

n	a(n)
1	1
2	3
3	2
4	13
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	183
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	29
31	30
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	49
51	50
52	51
53	52
54	53
55	54
56	55
57	56
58	57
59	58
60	59
61	60
62	61
63	62
64	63
65	64
66	65
67	66
68	67
69	68
70	69
71	70
72	71

[1, 3, 2, 13, 4, 5, 6, 7, 8, 9, 10, 11, 12, 183, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 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, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71]

cp's OEIS Frontend

A055456 a(n) is the smallest number which is not the sum of exactly 1 or of n earlier terms.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	13
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	183
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	29
31	30
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	49
51	50
52	51
53	52
54	53
55	54
56	55
57	56
58	57
59	58
60	59
61	60
62	61
63	62
64	63
65	64
66	65
67	66
68	67
69	68
70	69
71	70
72	71

n	a(n)
1	1
2	3
3	2
4	13
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	183
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	29
31	30
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	49
51	50
52	51
53	52
54	53
55	54
56	55
57	56
58	57
59	58
60	59
61	60
62	61
63	62
64	63
65	64
66	65
67	66
68	67
69	68
70	69
71	70
72	71

n	a(n)
1	1
2	3
3	2
4	13
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	183
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	29
31	30
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	49
51	50
52	51
53	52
54	53
55	54
56	55
57	56
58	57
59	58
60	59
61	60
62	61
63	62
64	63
65	64
66	65
67	66
68	67
69	68
70	69
71	70
72	71