-857

Appears in sequences

• Matrix inverse of triangle A055277(n+1,k).at n=46A055288
• a(n) = -n^2 + 9*n + 53.at n=35A126665
• Values of n such that L(1) and N(1) 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=49A226921
• Values of n such that L(20) and N(20) 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=4A227523
• Expansion of (1 - 2*x^2)/(1 + x)^3. Second column of Riordan triangle A248156.at n=44A248158
• Expansion of 1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - x^5/(1 - x^6/(1 - ... - x^n/(1 - ...))))))), a continued fraction.at n=26A291148
• Expansion of 1/(1 + x * Sum_{k>=1} prime(k)*x^k).at n=17A307899
• a(n) = A325977(A228058(n)).at n=52A389217