29580

Appears in sequences

• Coordination sequence for 4-dimensional primitive di-isohexagonal orthogonal lattice.at n=17A008530
• Expansion of Product_{m>=1} (1+q^m)^(-4).at n=30A022599
• Least area of primitive Pythagorean triangle whose legs differ by A058529(n).at n=30A094143
• Numbers in the cycle-attractors of length=14 of the function f(x)=A063919(x).at n=15A097030
• Triangle read by rows: T(n,k) is the number of k-matchings in the P_4 X P_n lattice graph.at n=32A100265
• Least K such that K*(3^(n+j))+1 is prime for j=0 to 4.at n=4A109854
• McKay-Thompson series of class 24E for the Monster group.at n=30A112160
• a(n) = area of Pythagorean triangle with hypotenuse p, where p = A002144(n) = n-th prime == 1 (mod 4).at n=40A145010
• a(n) = 16*n^2 - 4.at n=42A158443
• The Wiener index of the binary Fibonacci tree of order n.at n=7A192019
• Molecular topological indices of the graph join C_n + C_n of cycle graphs.at n=14A192848
• Triangle read by rows: T(m,n) is the Szeged index of the grid graph P_m X P_n (1 <= n <= m).at n=40A245826
• (16n^6 - 24n^5 + 2n^4 + 11n^3 - 6n^2 + n) / 6.at n=5A245941
• Numbers that are members of unitary sigma aliquot cycles (union of unitary perfect, unitary amicable and unitary sociable numbers).at n=32A327157
• Irregular triangle of cycles of purely periodic unitary sigma aliquot sequences with their smallest member as starting number, read by rows.at n=32A336216
• Triangle read by rows: T(n,k) = Sum_{i=0..n-1} binomial(n-1, i)*T(n-1-i,k-1) - Sum_{i=1..n-1} binomial(n-1,i)*T(n-1-i,k) for 1 <= k <= n+1 with T(0,1) = 1 (and T(n,k) = 0 otherwise).at n=58A341287
• Number of integer partitions of n that are empty, have smallest part not dividing all the others, or greatest part not divisible by all the others.at n=39A343346
• G.f. ( Chi(sqrt(x))^4 + Chi(-sqrt(x))^4 )/2, where Chi(x) = Product_{k >= 0} 1 + x^(2*k+1) is the g.f. of A000700.at n=15A366104