A260305 - cp's OEIS frontend

A260305 We represent square arrays of single-digit entries by the single number formed by reading them row-by-row, top-to-bottom. Sequence gives list of k X k square grids formed from single-digit numbers having property that reading across each row and each column gives a square number.

n	a(n)
1	1
2	4
3	9
4	1664
5	3664
6	6449
7	8116
8	121256169
9	121289196
10	144400400
11	144484441
12	169676961
13	361676169
14	441400100
15	441484144
16	529256961
17	729256961
18	841400100
19	841484144
20	961676169
21	1296202592166561
22	1369384464009409

[1, 4, 9, 1664, 3664, 6449, 8116, 121256169, 121289196, 144400400, 144484441, 169676961, 361676169, 441400100, 441484144, 529256961, 729256961, 841400100, 841484144, 961676169, 1296202592166561, 1369384464009409]

cp's OEIS Frontend

A260305 We represent square arrays of single-digit entries by the single number formed by reading them row-by-row, top-to-bottom. Sequence gives list of k X k square grids formed from single-digit numbers having property that reading across each row and each column gives a square number.

Table of values

List of values