A155985 - cp's OEIS frontend

A155985 a(1)=1, then a(n) is the smallest square not occurring earlier, not ending with zero and starting with the last digit of a(n-1).

n	a(n)
1	1
2	16
3	64
4	4
5	49
6	9
7	961
8	121
9	144
10	441
11	169
12	9025
13	529
14	9216
15	625
16	576
17	676
18	6084
19	484
20	4096
21	6241
22	196
23	6561
24	1024
25	4225
26	5041
27	1089
28	9409
29	9604
30	4356
31	6724
32	4489
33	9801
34	1156
35	6889
36	90601
37	1225
38	5184
39	4624
40	4761
41	1296
42	60025
43	5329
44	91204
45	40401
46	1369

[1, 16, 64, 4, 49, 9, 961, 121, 144, 441, 169, 9025, 529, 9216, 625, 576, 676, 6084, 484, 4096, 6241, 196, 6561, 1024, 4225, 5041, 1089, 9409, 9604, 4356, 6724, 4489, 9801, 1156, 6889, 90601, 1225, 5184, 4624, 4761, 1296, 60025, 5329, 91204, 40401, 1369]

cp's OEIS Frontend

A155985 a(1)=1, then a(n) is the smallest square not occurring earlier, not ending with zero and starting with the last digit of a(n-1).

Table of values

List of values