39356

Appears in sequences

• a(n) = 2*3^n - n - 1.at n=9A132308
• Antidiagonal sums of the convolution array A213756.at n=10A213758
• a(n) is the position of the first term in A303762 that has prime(n) as one of its prime factors.at n=18A302774
• Expansion of Product_{j>=1} 1/(1 + (-1 + Product_{k>=1} 1/(1 + x^k))^j).at n=24A307438
• Number of compositions of n into parts 1, 8, 9.at n=45A322405
• Place a point on the integer coordinates, up to |n|, along all four axial directions on a Cartesian plane, and then join an infinite straight line between every pair of points: a(n) is the number of finite regions created in the resulting graph.at n=8A386560