19136

Appears in sequences

• Coordination sequence for MgNi2, Position Ni1.at n=34A009933
• McKay-Thompson series of class 45b for Monster.at n=58A058686
• Sum of antidiagonals of A060736.at n=32A061349
• Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 3 (most significant digit on right).at n=8A061956
• Expansion of (1-x)/(1-2*x^2+2*x^3).at n=18A078025
• Number of partitions of n into decimal repdigit numbers.at n=41A088669
• Number of partitions of n into decimal palindromes.at n=41A091580
• Expansion of 1/((1-x)^2*(1-x^2)^2*(1-x^3)).at n=44A097701
• Integers that are Rhonda numbers to base 6.at n=7A100969
• a(n) = 2*a(n-2) + 2*a(n-3).at n=19A107383
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and have k returns to the x-axis.at n=24A108435
• A vector group determinant sequence in which the next element is made by a sum of the older elements over a vector like 2 X 2 matrix group.at n=7A120494
• First differences of A145646.at n=9A145647
• Number of line segments connecting exactly 9 points in an n x n grid of points.at n=43A177725
• Monotonic ordering of set S generated by these rules: if x and y are in S and x^2-y^2>0 then x^2-y^2 is in S, and 2 and 3 are in S.at n=18A192648
• Number of all possible tetrahedra of any size and orientation, formed when intersecting the original regular tetrahedron by planes parallel to its sides and dividing its edges into n equal parts.at n=22A216173
• Numbers m such that the GCD of the x's that satisfy sigma(x) = m is 3.at n=32A241648
• Number of 3 X n 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=9A281058
• A(n,k) is the n-th Rhonda number to base A002808(k), the k-th composite number; square array A(n,k), n>=1, k>=1, read by antidiagonals.at n=43A291925
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x + 529)^2 = y^2.at n=11A309998