A226587 - cp's OEIS frontend

A226587 Numbers n having at least two complementary pairs of divisors (q, p) and (p', q') such that n = pq = p'q' where the decimal digits of p' are the 9's complement of the decimal digits of p and the decimal digits of q' are the 9's complement of the decimal digits of q.

n	a(n)
1	88
2	154
3	198
4	220
5	888
6	1554
7	1998
8	2220
9	8888
10	9768
11	15554
12	17094
13	19998
14	21978
15	22220
16	24420
17	88888
18	89890
19	97768
20	105444
21	112918
22	120190
23	127260
24	134128
25	140794
26	147258
27	153520
28	155554
29	159580
30	165438
31	171094
32	176548
33	181800
34	186850
35	191698
36	196344
37	199998
38	200788
39	205030

[88, 154, 198, 220, 888, 1554, 1998, 2220, 8888, 9768, 15554, 17094, 19998, 21978, 22220, 24420, 88888, 89890, 97768, 105444, 112918, 120190, 127260, 134128, 140794, 147258, 153520, 155554, 159580, 165438, 171094, 176548, 181800, 186850, 191698, 196344, 199998, 200788, 205030]

cp's OEIS Frontend

A226587 Numbers n having at least two complementary pairs of divisors (q, p) and (p', q') such that n = pq = p'q' where the decimal digits of p' are the 9's complement of the decimal digits of p and the decimal digits of q' are the 9's complement of the decimal digits of q.

Table of values

List of values

cp's OEIS Frontend

A226587 Numbers n having at least two complementary pairs of divisors (q, p) and (p', q') such that n = p*q = p'*q' where the decimal digits of p' are the 9's complement of the decimal digits of p and the decimal digits of q' are the 9's complement of the decimal digits of q.

Table of values

List of values

A226587 Numbers n having at least two complementary pairs of divisors (q, p) and (p', q') such that n = pq = p'q' where the decimal digits of p' are the 9's complement of the decimal digits of p and the decimal digits of q' are the 9's complement of the decimal digits of q.