127880

Appears in sequences

• Number of Ramanujan primes R_k such that 2^(n-1) < R_k <= 2^n.at n=23A190501
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=21A193044
• Expansion of 1 / ((1-x)^4 - x^2)^2.at n=9A392582