81363domain: NAppears in sequencesRow sums of triangle A131321.at n=16A131322a(n) = Sum_{k=0..n} binomial(n+k,2k)*Fibonacci(2k+1).at n=8A166482Numbers k such that R_k + 80 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=11A256762