99009901
domain: N
Appears in sequences
- Cyclotomic polynomials at x=10.at n=19A019328
- Cyclotomic polynomials at x=-10.at n=20A020509
- Divisors of 10^10 + 1.at n=6A027900
- a(n) = (n^n + 1)/ (n^(2^a) + 1), where 2^a is the highest power of 2 dividing n.at n=9A056009
- a(n) = n^8 - n^6 + n^4 - n^2 + 1.at n=10A060892
- 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=7A064942
- Multipliers resulting from A068666.at n=7A068973
- a(n) = A083151(n+1)/A083151(n).at n=7A083152
- a(n) = A083153(n+1)/A083153(n).at n=11A083154
- Primitive cofactor of n-th repunit A002275(n).at n=19A204847
- 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=9A275986