68561
domain: N
Appears in sequences
- Numbers n such that n-1, n and n+1 can be expressed as a sum of 2 squares in at least 2 ways.at n=9A091459
- Numbers k such that Sum_{i=1..k} i^9 divides Product_{i=1..k} i^9.at n=20A166609
- Fibonacci-Chebyshev sequence depending on rabbit sequence A005614.at n=52A176741
- Numbers that are palindromic in base i-1.at n=28A342725