484400

Appears in sequences

• Number of (n+1) X (1+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2 X 2 subblock.at n=5A236664
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock.at n=15A236669
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock.at n=20A236669
• a(n) is the least k such that k^2 + 1 is a semiprime p*q, p < q, and (q - p)/2^n is prime.at n=12A258780