29232

Appears in sequences

• Number of n-gons in cubic curve.at n=6A005782
• a(n) is the concatenation of n and 8n.at n=28A009470
• Theta series of D*_29 lattice.at n=12A022082
• Numbers k such that sigma(k)+1 is a square and sets a new record for such squares.at n=41A063729
• Sum of aliquot divisors of Ramanujan's highly composite numbers.at n=20A072824
• a(n) = sigma[k](n) - phi(n)^k - d(n)^k for k=3.at n=32A079539
• Numbers that can be expressed as the difference of the squares of primes in exactly five distinct ways.at n=30A092001
• If X_1, ..., X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 3-subsets of X containing none of X_i, (i=1,...,n).at n=26A130809
• a(n) = 81*n^2 - 9.at n=18A157909
• Sum of divisors of the product of two consecutive primes.at n=38A180617
• Numbers with prime factorization pqr^2s^4.at n=31A190107
• Primitive terms of A067808.at n=44A302127
• G.f.: A(x,y) = (1-y)^2 * Sum_{n>=0} (2*n+1) * y^n * (1 + x*(1-y)^2 )^(n*(n+1)/2).at n=47A303650
• G.f.: A(x,y) = (1-y)^2 * Sum_{n>=0} (2*n+1) * y^n * (1 + x*(1-y)^2 )^(n*(n+1)/2).at n=50A303650
• Coefficient of x^n in Product_{k>=1} ((1+x^k)/(1-x^k))^(n^3).at n=3A304461
• a(n) is the first term k of A329902 for which A056239(k) = n.at n=22A330743
• Primorial deflation of A133411(n), where A133411(n) is the smallest highly composite number of the form k*a(n-1) where k is an integer greater than 1.at n=22A330744
• Primorial deflation of A019505(n), where A019505(n) is smallest number with same number of divisors as 2*A019505(n-1), starting from A019505(1) = 1.at n=56A330745
• T(n, k) = [x^k] n! [t^n] 1/(exp((V*(2 - 2*t + V))/(4*t))*sqrt(1 + V)) where V = W(-2*t*x) and W denotes the Lambert function. Table read by rows, T(n, k) for 0 <= k <= n.at n=39A343807
• Irregular triangle read by rows: T(n,k) = S1(n,k)*2^k, where S1(n,k) is the associated Stirling number of the first kind (cf. A008306) (n >= 0, 0 <= k <= floor(n/2)).at n=22A349479