A014575 - cp's OEIS frontend

A014575 Vampire numbers (definition 2): numbers n with an even number of digits which have a factorization n = i*j where i and j have the same number of digits and the multiset of the digits of n coincides with the multiset of the digits of i and j.

n	a(n)
1	1260
2	1395
3	1435
4	1530
5	1827
6	2187
7	6880
8	102510
9	104260
10	105210
11	105264
12	105750
13	108135
14	110758
15	115672
16	116725
17	117067
18	118440
19	120600
20	123354
21	124483
22	125248
23	125433
24	125460
25	125500
26	126027
27	126846
28	129640

[1260, 1395, 1435, 1530, 1827, 2187, 6880, 102510, 104260, 105210, 105264, 105750, 108135, 110758, 115672, 116725, 117067, 118440, 120600, 123354, 124483, 125248, 125433, 125460, 125500, 126027, 126846, 129640]

cp's OEIS Frontend

A014575 Vampire numbers (definition 2): numbers n with an even number of digits which have a factorization n = i*j where i and j have the same number of digits and the multiset of the digits of n coincides with the multiset of the digits of i and j.

Table of values

List of values