18448

Appears in sequences

• a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n+1-k), where k = [ (n+1)/2 ], s = (1, p(1), p(2), ...).at n=29A024479
• a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = (1, p(1), p(2), ...).at n=28A025099
• Number of points of L1 norm 3 in cubic lattice Z^n.at n=24A035597
• Coordination sequence for 24-dimensional cubic lattice.at n=3A035719
• Coordination sequence for lattice D*_24 (with edges defined by l_1 norm = 1).at n=3A035797
• a(n) = 512n + 16.at n=35A157475
• Row sums of A168281.at n=46A168380
• G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A003059(n+1), where A003059 is defined by "n appears 2n-1 times.".at n=14A193050
• Number of partitions of n, where the difference between the number of odd parts and the number of even parts is 9.at n=47A240018
• The 180-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=39A244806
• Numbers k such that 2*10^k - 69 is prime.at n=18A290033
• G.f. A(x) satisfies: [x^k] (1+x)^(n^2) * A(x) = 0 for k = (n-1)^2 + 1 through k = n^2 for n >= 1.at n=10A305600
• Positions of zeros in A345055, which is the Dirichlet inverse of A011772.at n=37A345053
• a(n) = n^4 - 4*(n^3-n)/3.at n=12A389090