67449

Appears in sequences

• Successive powers of the matrix A=[1,2;3,4] written by rows in groups of 4.at n=26A100638
• a(n) is the least exponent e such that 3^e has exactly n consecutive 3's in its decimal representation.at n=8A131550
• The least k such that the decimal expansion of 3^k contains 9 consecutive n's.at n=3A215783
• Number of n X 2 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.at n=6A233020
• Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.at n=1A233025
• T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.at n=29A233026
• T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.at n=34A233026
• Second component B of the pairs (A, B) from A389379.at n=22A389390