990100990100
domain: N
Appears in sequences
- Decimal numbers n such that after possibly prefixing leading 0's to n, the resulting number n' can be broken into 2 numbers of equal length, n' = xy, such that x^2+y^2 = n (y may also have leading zeros).at n=20A064942
- Positive integers of the form x*10^k + y which also equal x^2 + y^2 (x, y and k being positive integers).at n=24A275986