238612935

Appears in sequences

• Gaussian binomial coefficient [ n,2 ] for q = -2.at n=14A015249
• Exponential self-convolution of Jacobsthal numbers (divided by 2).at n=16A084152
• Jacobsthal oblong numbers.at n=15A084175
• Jac(n)(2Jac(n)-1).at n=15A095129
• A084175 interleaved with 2*A084175.at n=30A138477
• First differences of A138477.at n=30A138495
• Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 3 for all integers k.at n=31A329479