A182194 - cp's OEIS frontend

A182194 a(1)=2, a(n)=a(n-1)^2 if the minimal natural number > 1 not yet in the sequence is greater than a(n-1), else a(n)=a(n-1)-1.

n	a(n)
1	2
2	4
3	3
4	9
5	8
6	7
7	6
8	5
9	25
10	24
11	23
12	22
13	21
14	20
15	19
16	18
17	17
18	16
19	15
20	14
21	13
22	12
23	11
24	10
25	100
26	99
27	98
28	97
29	96
30	95
31	94
32	93
33	92
34	91
35	90
36	89
37	88
38	87
39	86
40	85
41	84
42	83
43	82
44	81
45	80
46	79
47	78
48	77
49	76
50	75
51	74
52	73
53	72
54	71
55	70
56	69
57	68
58	67
59	66
60	65
61	64
62	63
63	62
64	61
65	60
66	59
67	58
68	57
69	56
70	55
71	54

[2, 4, 3, 9, 8, 7, 6, 5, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 100, 99, 98, 97, 96, 95, 94, 93, 92, 91, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54]

cp's OEIS Frontend

A182194 a(1)=2, a(n)=a(n-1)^2 if the minimal natural number > 1 not yet in the sequence is greater than a(n-1), else a(n)=a(n-1)-1.

Table of values

List of values

n	a(n)
1	2
2	4
3	3
4	9
5	8
6	7
7	6
8	5
9	25
10	24
11	23
12	22
13	21
14	20
15	19
16	18
17	17
18	16
19	15
20	14
21	13
22	12
23	11
24	10
25	100
26	99
27	98
28	97
29	96
30	95
31	94
32	93
33	92
34	91
35	90
36	89
37	88
38	87
39	86
40	85
41	84
42	83
43	82
44	81
45	80
46	79
47	78
48	77
49	76
50	75
51	74
52	73
53	72
54	71
55	70
56	69
57	68
58	67
59	66
60	65
61	64
62	63
63	62
64	61
65	60
66	59
67	58
68	57
69	56
70	55
71	54

n	a(n)
1	2
2	4
3	3
4	9
5	8
6	7
7	6
8	5
9	25
10	24
11	23
12	22
13	21
14	20
15	19
16	18
17	17
18	16
19	15
20	14
21	13
22	12
23	11
24	10
25	100
26	99
27	98
28	97
29	96
30	95
31	94
32	93
33	92
34	91
35	90
36	89
37	88
38	87
39	86
40	85
41	84
42	83
43	82
44	81
45	80
46	79
47	78
48	77
49	76
50	75
51	74
52	73
53	72
54	71
55	70
56	69
57	68
58	67
59	66
60	65
61	64
62	63
63	62
64	61
65	60
66	59
67	58
68	57
69	56
70	55
71	54

n	a(n)
1	2
2	4
3	3
4	9
5	8
6	7
7	6
8	5
9	25
10	24
11	23
12	22
13	21
14	20
15	19
16	18
17	17
18	16
19	15
20	14
21	13
22	12
23	11
24	10
25	100
26	99
27	98
28	97
29	96
30	95
31	94
32	93
33	92
34	91
35	90
36	89
37	88
38	87
39	86
40	85
41	84
42	83
43	82
44	81
45	80
46	79
47	78
48	77
49	76
50	75
51	74
52	73
53	72
54	71
55	70
56	69
57	68
58	67
59	66
60	65
61	64
62	63
63	62
64	61
65	60
66	59
67	58
68	57
69	56
70	55
71	54