854658

Appears in sequences

• a(n) = C(n+1) + n*C(n) where C = A000108 (Catalan numbers).at n=11A077587
• Number of 3 X 3 X 3 triangular 0..n arrays with some element less than a w, nw or ne neighbor exactly once.at n=16A271035
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=50A286785
• Nonsquare positive integers k such that k = a*b = c*m + b and b^2 = a*m + c where m > 1, 0 < a, b, c < m.at n=15A347168