22068

Appears in sequences

• Number of factorization patterns of polynomials of degree n over F_3.at n=23A006168
• Number of collinear triples in a 3 X n rectangular grid.at n=36A057566
• Coefficient of x^n in g.f.^n is A086608(n).at n=15A088219
• a(1) = 1; a(n) = sum of previous terms a(k) such that a(k) + n is prime.at n=62A108867
• Coefficients of solution to A(x) = (1 + x*A(x)^2) * (1-3*x) / (1-2*x)^2.at n=9A129086
• a(n) = 729*n - 531.at n=30A156771
• Number of nX2 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.at n=9A166797
• The least common multiple of 1+n and 1+n^2.at n=35A281660
• Numbers k such that Bernoulli number B_{k} has denominator 1919190.at n=15A295595
• Expansion of 1/(1 - x/(1 - x/(1 - 2*x/(1 - 3*x/(1 - 5*x/(1 - 8*x/(1 - ... - Fibonacci(k)*x/(1 - ...)))))))), a continued fraction.at n=7A307082
• a(n) = n*(2*(n - 2)*n + (-1)^n + 3)/4.at n=36A323724
• Expansion of g.f.: 1/(Sum_{p odd prime} x^p)^2 (even powers only).at n=28A351317