101395

Appears in sequences

• Numbers k such that 2*10^k + 3*R_k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=26A056701
• Number of -3..3 circular arrays x(0..n+1) of n+2 elements with zero sums of x(i) and x(i)*x((i+1) mod (n+2)).at n=6A202001
• T(n,k)=Number of -k..k circular arrays x(0..n+1) of n+2 elements with zero sums of x(i) and x(i)*x((i+1) mod (n+2)).at n=42A202006
• Number of -n..n circular arrays x(0..8) of 9 elements with zero sums of x(i) and x(i)*x((i+1) mod 9).at n=2A202011