90509
domain: N
Appears in sequences
- Palindromes that start with 9.at n=27A043044
- Composite numbers which in base 8 contain their largest proper factor as a substring.at n=11A063167
- Duplicate of A063167.at n=11A063878
- a(n) = A104908(n) - 10*A104863(n).at n=39A104909
- Positive numbers y such that y^2 is of the form x^2+(x+119)^2 with integer x.at n=39A156650
- Numbers n with property that n^2 starts and ends with 81.at n=30A159775
- Palindromic composite numbers starting with a digit 9.at n=25A222729