145299
domain: N
Appears in sequences
- a(n) = lcm(n, n+1, n+2, n+3, n+4) / 60.at n=32A067048
- sigma(n) + phi(n) is a fourth power.at n=24A114068
- The 3rd Witt transform of A000027.at n=35A147611
- Number of zero-sum -n..n arrays of 5 elements with first through third differences also in -n..n.at n=21A202513
- G.f. satisfies: A(x) = (1 + x*A(x)^3)^2.at n=6A212071
- a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/5)} a(5*k) * a(n-1-5*k).at n=31A386379