26499

Appears in sequences

• Numbers k such that k^3 contains a pandigital substring.at n=28A115933
• Numbers k which are concatenations k=x//y such that x^2 + y^2 is a multiple of k.at n=23A162463
• Total sum of parts of multiplicity 4 in all partitions of n.at n=37A222732
• G.f. 1-(2*x^3)/(-sqrt(-3*x^4-4*x^3-2*x^2+1)-x^2+1).at n=21A247162
• Number of Hamiltonian circuits within parallelograms of size 7 X n on the triangular lattice.at n=2A339622
• Square array T(n,k), n >= 2, k >= 2, read by antidiagonals, where T(n,k) is the number of Hamiltonian circuits within parallelograms of size n X k on the triangular lattice.at n=30A339849
• Square array T(n,k), n >= 2, k >= 2, read by antidiagonals, where T(n,k) is the number of Hamiltonian circuits within parallelograms of size n X k on the triangular lattice.at n=33A339849
• Number of Hamiltonian circuits within parallelograms of size 4 X n on the triangular lattice.at n=5A339851
• a(n) = n^2*(2*n^2-23).at n=10A370109