186162
domain: N
Appears in sequences
- Sum of staircase twin primes according to the rule: top * bottom - next top.at n=22A135285
- Number of (n+1) X (3+1) 0..1 arrays with no 2 X 2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements.at n=6A251312
- Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements.at n=2A251316
- T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements.at n=38A251317
- a(n) = smallest number k with n prime factors such that d + k/d is prime for every d | k.at n=5A293756