144945

Appears in sequences

• Number of (n+1) X 2 0..3 arrays containing all values 0..3 with every 2 X 2 subblock having one or two distinct values, and new values 0..3 introduced in row major order.at n=6A209962
• Number of (n+1)X8 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order.at n=0A209968
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order.at n=21A209969
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order.at n=27A209969
• Smallest k such that none of k + 1, k + 3,... k + 2n - 1 are squarefree and all of k + 2, k + 4,... k + 2n are squarefree.at n=8A257115
• a(n) = Sum_{j=1..10^n-1} 2^f(j) where f(j) is the number of zero digits in the decimal representation of j.at n=4A268839