A264770 - cp's OEIS frontend

A264770 a(1) = 1, a(n) = smallest positive number not yet in the sequence such that the concatenation of a(n-1) and a(n) is a square.

n	a(n)
1	1
2	6
3	4
4	9
5	61
6	504
7	100
8	489
9	2944
10	656
11	3844
12	34449
13	85636
14	516
15	961
16	6201
17	5625
18	43524
19	36729
20	7225
21	344
22	569
23	2996
24	361
25	201
26	64
27	1601
28	6004
29	7001
30	316
31	84
32	681
33	21
34	16
35	81
36	225
37	625
38	5001
39	3184
40	3449
41	2129
42	8225
43	424
44	36
45	481
46	636
47	804
48	609
49	1024
50	144

[1, 6, 4, 9, 61, 504, 100, 489, 2944, 656, 3844, 34449, 85636, 516, 961, 6201, 5625, 43524, 36729, 7225, 344, 569, 2996, 361, 201, 64, 1601, 6004, 7001, 316, 84, 681, 21, 16, 81, 225, 625, 5001, 3184, 3449, 2129, 8225, 424, 36, 481, 636, 804, 609, 1024, 144]

cp's OEIS Frontend

A264770 a(1) = 1, a(n) = smallest positive number not yet in the sequence such that the concatenation of a(n-1) and a(n) is a square.

Table of values

List of values