361244

Appears in sequences

• Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to 3 6 or 9.at n=5A251293
• Number of (n+1)X(6+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=0A251298
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=15A251300
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=20A251300
• a(n) = (A242804(n)-9)/12.at n=26A257044
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k torus up to horizontal reflections by two tiles that are both fixed under horizontal reflection.at n=39A368305