125525
domain: N
Appears in sequences
- Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 7.at n=53A137004
- Number of (n+6)X7 0..1 matrices with each 7X7 subblock idempotent.at n=2A224581
- Number of (n+6)X9 0..1 matrices with each 7X7 subblock idempotent.at n=0A224583
- T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=3A224588
- T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=5A224588
- Starts of runs of at least 3 consecutive odd numbers whose prime factors are all prime-indexed primes.at n=37A357168
- The number of vertices in a Farey diagram of order (n,n).at n=8A358883