A115433 - cp's OEIS frontend

A115433 Numbers k such that the concatenation of k with k-5 gives a square.

n	a(n)
1	21
2	30
3	902406
4	959721
5	6040059046
6	6242406405
7	9842410005
8	9900249006
9	15033519988494
10	17250863148969
11	22499666270469
12	27632040031654
13	34182546327286
14	37487353123861
15	52213551379230
16	74230108225630

[21, 30, 902406, 959721, 6040059046, 6242406405, 9842410005, 9900249006, 15033519988494, 17250863148969, 22499666270469, 27632040031654, 34182546327286, 37487353123861, 52213551379230, 74230108225630]

cp's OEIS Frontend

A115433 Numbers k such that the concatenation of k with k-5 gives a square.

Table of values

List of values