4986541

Appears in sequences

• a(n) = a(n-3) - 5*a(n-2) + 5*a(n-1), a(0) = 1, a(1) = 3, a(2) = 10.at n=12A102871
• a(n) = -a(n-1)+4*a(n-2)+4*a(n-3)-a(n-4)-a(n-5).at n=26A107401
• a(n) = A002531(n)*A002531(n+1).at n=12A146983
• Indices of centered triangular numbers (A005448) which are also hexagonal numbers (A000384).at n=6A254284
• G.f. A(x) satisfies: Sum_{n>=0} x^(n^2) * A(x)^n = Sum_{n>=0} x^n * (1+x)^(n^2).at n=11A337850