52966

Appears in sequences

• Consider the family of multigraphs enriched by the species of quaternary sets. Sequence gives number of those multigraphs with 4n edges.at n=3A099684
• 1/128 the number of (n+2)X4 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=4A185986
• 1/128 the number of (n+2)X7 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=1A185989
• T(n,k)=1/128 the number of (n+2)X(k+2) binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=16A185993
• T(n,k)=1/128 the number of (n+2)X(k+2) binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.at n=19A185993
• Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes.at n=49A381030