23803

Appears in sequences

• G.f.: A(x,y) = exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^5 * y^k] * x^n/n ) = Sum_{n>=0,k=0..n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.at n=17A218115
• G.f.: A(x,y) = exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^5 * y^k] * x^n/n ) = Sum_{n>=0,k=0..n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.at n=18A218115
• Number of compositions (ordered partitions) of n into at most 5 squarefree parts.at n=44A347780
• The number of unit squares enclosed by the rectangular spiral of which the n-th side has length prime(n).at n=38A356465