92976domain: NAppears in sequencesNumbers k such that 6*R_k - 5 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=29A098088Expansion of (1/x) * Series_Reversion( x*(1-x)*(1-x^4) ).at n=11A366041Expansion of g.f. A(x) satisfying A(x)^4 = A( x*A(x)^3/(1 - A(x)) ).at n=11A372532