38445

Appears in sequences

• a(n) = (2*n^3 + 5*n^2 - 13*n)/2.at n=32A162262
• a(n) = n^n - Sum_{k=1..n-2} f_k(n), with f_k(n)=( floor( (n^n - Sum_{t=1..k-1} f_t(n))^(1/(n-k)) ) )^(n-k).at n=53A349184
• a(n) is the number of regions into which three-dimensional Euclidean space is divided by n-1 planes parallel to each face of a regular tetrahedron with edge length n, dividing the edges into unit segments.at n=21A364401
• a(n) = Sum_{k=1..n} (-1)^(k-1) * binomial(floor(n/k)+3,4).at n=29A366659
• Number of ways to partition digits 0-9 into signed terms in decreasing absolute value order with sum n.at n=27A389952