79170

Appears in sequences

• Numbers that are the sum of 5 nonzero 8th powers.at n=32A003383
• a(n) = floor(binomial(n,6)/6).at n=29A011852
• Triangle of (Gaussian) q-binomial coefficients for q=-17.at n=12A015141
• Partial sums of A051865.at n=35A050441
• Products of exactly 6 distinct primes.at n=11A067885
• Numbers with six distinct prime divisors.at n=13A074969
• First occurrence (*2) of n in A088627 - or - least number that yields n different primes if you factorize it in all possible ways in two factors and add these factors.at n=19A091350
• Numbers n such that the denominator of the 2n-th Bernoulli number is divisible by n but sum_{d|n} sigma(d)/phi(d) is not an integer.at n=25A099008
• Numbers n such that sigma(n) = 15*phi(n) (where sigma=A000203, phi=A000010).at n=6A171260
• Squarefree kernels of orders of sporadic simple groups.at n=11A174848
• G.f.: 1/(1 - x*d/dx log(eta(x))), where eta(x) is Dedekind's eta(q) function without the q^(1/24) factor.at n=46A283334
• Numbers k such that usigma(k) >= 3*k, where usigma(k) = sum of unitary divisors of k (A034448).at n=10A285615
• a(n) = sigma_2(n)*sigma_3(n)/sigma(n).at n=16A320917
• Unitary barely 3-abundant: numbers m such that 3 < usigma(m)/m < usigma(k)/k for all numbers k < m, where usigma is the sum of unitary divisors function (A034448).at n=7A336671
• Numbers k > 2 such that omega(k) > log(log(k)) + 2 * sqrt(log(log(k))), where omega(k) is the number of distinct primes dividing k (A001221).at n=16A336910
• Lexicographically earliest sequence of positive distinct terms such that the digital root of a(n) is the number of distinct prime factors of a(n+1).at n=32A337096
• Least positive integer whose multiset of prime indices has exactly n distinct semi-sums.at n=13A367097
• Products of 6 distinct primes that are sandwiched between semiprime numbers.at n=3A378627
• Integers x such that there exist two integers 0<x<=y<=z such that psi(x) = psi(y) = psi(z) = x + y + z.at n=0A385852
• a(n) = Sum_{k=0..n} binomial(4*n+1,k) * binomial(2*n-k-1,n-k).at n=5A386938