65727domain: NAppears in sequencesa(n) = floor((1/16)*(16 + 2^n - 8*n + 8*n^2)).at n=20A130840Numbers k for which 6k+1, 24k+5, 432k^2+72k-1, and 432k^2+90k-1 are all prime.at n=52A175513Triangle of coefficients of polynomials v(n,x) jointly generated with A210864; see the Formula section.at n=50A210865