156428

Appears in sequences

• Numbers k such that 10^k + 111 is prime.at n=8A165508
• Number of (n+6)X7 0..1 matrices with each 7X7 subblock idempotent.at n=7A224581
• T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=28A224588