22932

Appears in sequences

• Distinct even elements in 3-Pascal triangle A028262 (by row).at n=34A028269
• Even elements to right of central elements in 3-Pascal triangle A028262.at n=28A028273
• G.f.: 1/((1-x)*(1-x^2))^3.at n=25A038163
• Number of sublattices of index n in generic 6-dimensional lattice.at n=5A038993
• Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors.at n=9A053215
• Expansion of (3+x)/(1-x)^6.at n=12A059599
• The sum of the non-divisors of n (less than n) is a multiple of the sum of the divisors of n.at n=19A066860
• Numbers k that divide tau(k)*sigma(k).at n=35A071707
• Numbers k such that sum of the divisors d of k divides 1 + 2 + ... + k = k(k+1)/2.at n=21A076617
• a(n) = (n+1)*(n+2)^2*(n+3)^2*(n+4)^2*(n+5)*(2n+3)/8640.at n=5A107943
• a(n) is the smallest number representable in exactly n ways as a sum of 2 powerful(1) numbers.at n=12A115354
• Square array T(n,m) read by antidiagonals: number of sublattices of index m in generic n-dimensional lattice.at n=60A128119
• Exponential abundant numbers: integers k for which A126164(k) > k, or equivalently for which A051377(k) > 2k.at n=24A129575
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+119)^2 = y^2.at n=29A129837
• Triangle read by rows: (1/5) * (A007318^4 - A007318^(-1)) as infinite lower triangular matrices.at n=30A131050
• First differences of A047835.at n=5A133708
• Numbers k such that the set of prime factors of phi(k) is a proper subset of the set of prime factors of k and the set of prime factors of k is a proper subset of the set of prime factors of sigma(k).at n=41A141717
• Triangle T(n,k) = binomial(2*n,k) *binomial(2*n-2*k,n-k), read by rows; 0<=k<=n.at n=30A142243
• a(n) = sigma(6^(n-1)).at n=5A160869
• Array read by antidiagonals: T(n,k) is the number of sublattices of index n in generic k-dimensional lattice (n >= 1, k >= 1).at n=60A160870