131068

Appears in sequences

• a(n) = 2^n - 4.at n=15A028399
• Sum of n-th powers of divisors of 48.at n=3A034668
• a(0)=1, a(n) = sigma_3(2n).at n=24A091986
• a(0)=1, a(n) = sigma_3(3n).at n=16A092341
• Second inverse mod 2 binomial transform of 2^n.at n=9A101554
• Residues of 3^(2^(p(n)-1)) for Mersenne numbers with prime indices.at n=6A131459
• Second diagonal under the main diagonal in A172119 written in a square (see comment).at n=15A173033
• a(n) = sigma(n*2^n).at n=11A176311
• Number of (n+1) X (2+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=4A250871
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=19A250877
• Number of (5+1) X (n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=1A250882
• Permutation of natural numbers: a(n) = A243071(A245612(n)).at n=18A253892
• A260685(4n).at n=16A264609
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 20", based on the 5-celled von Neumann neighborhood.at n=15A269712
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 513", based on the 5-celled von Neumann neighborhood.at n=16A282807
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 619", based on the 5-celled von Neumann neighborhood.at n=16A283353
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 705", based on the 5-celled von Neumann neighborhood.at n=16A283650
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 705", based on the 5-celled von Neumann neighborhood.at n=16A290194
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 961", based on the 5-celled von Neumann neighborhood.at n=16A290828
• Practical numbers q with q + 2 and q^2 + 2 both practical.at n=44A294225