286650

Appears in sequences

• Numbers that can be written as k/d(k) in four or more ways, where d(k) = number of divisors of k.at n=30A051346
• a(n) = binomial(n+6, 6) * binomial(n+11, n).at n=4A104674
• a(n) = binomial(n+4,4) * binomial(n+9,4).at n=6A104678
• a(n) = binomial(2+2*n, 2+n) * binomial(7+2*n, n).at n=4A114238
• a(n) = (3/8)*(n-1)*(n-2)*(27*n^2-137*n+180).at n=14A134176
• Eigentriangle by rows, termwise products of A078812 and its eigensequence, A125274.at n=50A144254
• Numbers n such that n = k/d(k) has exactly 4 solutions, where d(k) = number of divisors of k.at n=28A217125
• Triangle read by rows, T(n,k) = n!*B(n,k) for n>=0 and 0<=k<=n, where B(n,k) is the Bell matrix with generator 1/j for j>=1.at n=32A265607