-991

Appears in sequences

• a(n) = floor(sin(n)*cos(2*n)^2*tan(4*n)^3).at n=41A062233
• Row sums of a number triangle related to the Pell numbers.at n=31A110331
• a(n) = 36*n^2 - 810*n + 2753, producing the conjectured record number of 45 primes in a contiguous range of n for quadratic polynomials, i.e., abs(a(n)) is prime for 0 <= n < 44.at n=16A117081
• a(n) = a(n - 1) - 2*a(n - 2) + a(n - 3) - 2*a(n - 4) + a(n - 5).at n=31A122582
• First differences of A000463.at n=63A188652
• Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=30A351654
• Value k at the n-th step of A371282, where multiplied values are positive and subtracted values are negative.at n=54A371295