-4275

Appears in sequences

• Expansion of (1-x)^(-1)/(1-2*x+x^2+x^3).at n=21A077856
• Expansion of (1-x)^(-1)/(1+x^2-x^3).at n=50A077888
• a(n) = n^2 - (n-1)^2 - (n-2)^2 - ... - 1^2.at n=24A179297
• Values of n such that L(7) and N(7) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=53A226927