38401

Appears in sequences

• a(n) = (25*n^4-120*n^3+209*n^2-108*n)/6.at n=11A006529
• a(n) = n^4 - n - 1.at n=13A126423
• Smallest squarefree k such that the first n nonzero values of mu(j), j>=k, are all equal (mu is the Moebius function).at n=13A133295
• Smallest squarefree k such that the first n nonzero values of mu(j), j>=k, are all equal (mu is the Moebius function).at n=14A133295
• a(n) = 24*n^2 + 1.at n=40A158547
• Number of singular 2 X 2 matrices having all elements in {-n,...,n}.at n=29A209981
• a(n) is the least number k such that the sum of the n Moebius function values beginning at k reaches the maximum value A083544(n).at n=18A225420
• a(n) = Sum_{k=0..n} n^k * binomial(n,k)^4.at n=4A234971
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} k^j * binomial(n,j)^k.at n=40A336187
• a(n) = Sum_{k=0..n} n^k * binomial(n,k)^n.at n=4A336188