37947

Appears in sequences

• a(n) is the number of terms in the expansion of (x+y-z)*(x^2+y^2-z^2)*(x^3+y^3-z^3)*...*(x^n+y^n-z^n).at n=22A086817
• a(n) = n*(4*n^2 + 2*n + 1).at n=21A110451
• Numerators in continued fraction [0; 1, 3, 1, 3, 1, 3, ...].at n=13A136210
• Augmentation of the triangle A193592. See Comments.at n=43A193593
• Number of length-4 0..n arrays with no repeated value greater than or equal to the previous repeated value.at n=12A269410
• p-INVERT of the positive integers, where p(S) = 1 - 3*S.at n=6A290902
• a(n) = 3*(3*n+1)*(9*n+8)/2.at n=30A304504
• Numbers that can be represented in more than one way as p^2+p*q+q^2 with p and q primes, p<=q.at n=29A349987