21302

Appears in sequences

• Coordination sequence for MgNi2, Position Mg1.at n=36A009936
• Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 2,1,3,0.at n=4A037743
• Expansion of Product_{k>=1} 1 / (1 + k*x^k)^k.at n=18A266971
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 110", based on the 5-celled von Neumann neighborhood.at n=41A270170
• Number of nX2 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=5A279530
• T(n,k)=Number of nXk 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=22A279534
• T(n,k)=Number of nXk 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=26A279534
• T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=22A280313
• T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=26A280313
• T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=26A281693
• List of coefficients of reduced chromatic polynomial of dodecahedron, highest order terms first.at n=16A296918
• A290131/2.at n=22A331754
• a(n) is the least semiprime > a(n-2) + a(n-1), with a(1) = 4 and a(2) = 6.at n=17A366217
• Expansion of g.f. A(x) satisfying Sum_{n=-oo..+oo} (-1)^n * (x^n - 4*A(x))^n = theta_3(x).at n=6A369672