46004

Appears in sequences

• a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 0, 2, 1, 0.at n=20A025253
• Number of permutations satisfying -k <= p(i) - i <= r and p(i) - i not in I, i=1..n, with k=1, r=4, I={0,3}.at n=33A079973
• Even numbers such that the sum of the even divisors and the sum of the odd divisors are a square or a cube.at n=35A263695
• Number of compositions (ordered partitions) of n into prime parts not greater than sqrt(n).at n=33A368872
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A213109.at n=50A384802
• Numbers k such that sigma(k) = psi(k) + tau(k)^3.at n=19A390297