175104

Appears in sequences

• Number of circulant tournaments on 2n+1 nodes up to Cayley isomorphism.at n=21A002086
• Theta series of laminated lattice LAMBDA_18.at n=3A023940
• Number of walks of length n along the edges of an octahedron starting and ending at a vertex and also ( with a(0)=0 ) between two opposite vertices.at n=10A054881
• Expansion of q * (psi(q^5) / psi(q))^2 in powers of q where psi() is a Ramanujan theta function.at n=38A138519
• Number of different fixed (possibly) disconnected trominoes bounded (not necessarily tightly) by an n*n square.at n=18A162673
• Numbers m with property that m-th triangular number is a sum of divisors of some k-th triangular number (A175849).at n=20A175850
• Number of 3-step self-avoiding walks on an n X n X n X n 4-cube summed over all starting positions.at n=7A188786
• Expansion of q * (psi(-q^5) / psi(-q))^2 in powers of q where psi() is a Ramanujan theta function.at n=38A210458
• Expansion of 1 + q * (psi(-q^5) / psi(-q))^2 in powers of q where psi() is a Ramanujan theta function.at n=39A228864
• Number of length n+4 0..3 arrays with no disjoint pairs in any consecutive five terms having the same sum.at n=26A247399
• Number of rational knots (or two-bridge knots) with n crossings (chiral pairs counted as distinct).at n=19A336398
• Number of semicyclic pandiagonal Latin squares of order 2*n+1 with the first row in ascending order.at n=9A343867
• Numbers that are the sum of three positive cubes in four or more ways.at n=23A343968
• Numbers that are the sum of three positive cubes in exactly 4 ways.at n=22A343969