53393domain: NAppears in sequencesNumbers k such that 239*2^k+1 is prime.at n=27A032496Number of nondecreasing arrangements of 6 numbers x(i) in -(n+4)..(n+4) with the sum of sign(x(i))*x(i)^2 zero.at n=27A188006Number of permutations of [n] avoiding {4231, 2143, 1342}.at n=12A294701