109440

Appears in sequences

• Number of strongly triple-free subsets of {1, 2, ..., n}.at n=22A050295
• Number of orthogonal arrays OA(6,n,2,1).at n=3A066407
• Consider a Pythagorean triangle with sides a=u^2-v^2, b=2uv, c=u^2+v^2. The sequence is the area of the triangle when v=2, u=3,4,5,...at n=35A096382
• Integer averages of halves of first cubes of natural numbers (n^3)/2 for some n.at n=34A164579
• Triangle T(n,i) whose n-th row gives the number of numbers in any prime(n)# consecutive numbers whose smallest prime factor is prime(n-i+1).at n=29A174909
• The number of bijections f:{1,...,n}->Z/nZ such that f(ab)=f(a)+f(b) whenever all three function values are defined.at n=35A179989
• Triangle T(n,k) read by rows: T(n,k) = A005867(k-1)*A002110(n)/A002110(k).at n=34A293558
• Expansion of 1 + x*(1 + 2*x^2*(1 + 3*x^3*(1 + 4*x^4*(1 + ...)^4)^3)^2).at n=21A302751