24948

Appears in sequences

• Expansion of theta series of {E_7}* lattice in powers of q^(1/2).at n=32A003781
• Expansion of theta series of E_7 lattice in powers of q^2.at n=8A004008
• a(n) = (3^n/n!) * Product_{k=0..n-1} (3*k + 2).at n=5A004988
• Numbers k such that the set of prime divisors of k is equal to the set of prime divisors of sigma(k).at n=14A027598
• Maximal number of pairs of minimal vectors in n-dimensional laminated lattice.at n=22A028924
• Nonzero coefficients in theta series of {E_7}* lattice.at n=16A030443
• Theta series of lattice A_2 tensor E_7 (dimension 14, determinant 8748, minimal norm 4).at n=4A033699
• Number of partitions satisfying cn(2,5) <= cn(0,5) + cn(1,5) + cn(4,5) and cn(3,5) <= cn(0,5) + cn(1,5) + cn(4,5).at n=38A039871
• Duplicate of A033699.at n=4A047632
• a(n) = (n-p_1)(n-p_2)...(n-p_k) where p_k is the k-th prime and is also the largest prime < n.at n=13A080497
• Triangle read by rows in which row n gives coefficients of polynomial R_n(y) that satisfies R_n(1/3) = 3^n, where R_n(y) forms the initial (n+1) terms of g.f. A057083(y)^(n+1).at n=20A097186
• Numbers n such that 8*10^n + R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=8A103071
• Integers n such that 2*10^n + 81 is a prime number.at n=18A110920
• Denominator of Laguerre(n, 5).at n=11A160630
• Number of 4 X 4 X 4 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=38A166212
• Numbers with prime factorization pqr^2s^4.at n=23A190107
• Triangular array: the fusion of (x+1)^n and (x+2)^n; see Comments for the definition of fusion.at n=50A193722
• Mirror of the fusion triangle A193722.at n=49A193723
• Numbers n having at least two distinct symmetrical pairs of divisors (a, b) and (b', a') such that n = a*b = b'*a' with a' = reverse(a) and b' = reverse(b).at n=37A228164
• a(n) = 6*(n+1)!/((3+floor(n/2))*(floor(n/2)!)^2).at n=11A242986