A136821 - cp's OEIS frontend

A136821 Numbers k such that k and k^2 use only the digits 0, 1, 2, 4 and 9.

n	a(n)
1	0
2	1
3	2
4	10
5	11
6	12
7	20
8	21
9	49
10	100
11	101
12	102
13	110
14	120
15	149
16	200
17	201
18	210
19	212
20	490
21	499
22	1000
23	1001
24	1002
25	1010
26	1011
27	1012
28	1020
29	1021
30	1049
31	1100
32	1101
33	1102
34	1200
35	1201
36	1411
37	1421
38	1429
39	1490
40	2000
41	2001
42	2010
43	2011
44	2100
45	2101
46	2120
47	4499
48	4900
49	4990
50	4999
51	10000
52	10001
53	10002
54	10010
55	10011
56	10012
57	10020
58	10021
59	10100
60	10110
61	10120
62	10200
63	10210

[0, 1, 2, 10, 11, 12, 20, 21, 49, 100, 101, 102, 110, 120, 149, 200, 201, 210, 212, 490, 499, 1000, 1001, 1002, 1010, 1011, 1012, 1020, 1021, 1049, 1100, 1101, 1102, 1200, 1201, 1411, 1421, 1429, 1490, 2000, 2001, 2010, 2011, 2100, 2101, 2120, 4499, 4900, 4990, 4999, 10000, 10001, 10002, 10010, 10011, 10012, 10020, 10021, 10100, 10110, 10120, 10200, 10210]

cp's OEIS Frontend

A136821 Numbers k such that k and k^2 use only the digits 0, 1, 2, 4 and 9.

Table of values

List of values