129958domain: NAppears in sequencesNumber of permutations of [n] with exactly 3 descents which avoid the pattern 1324.at n=10A098994Expansion of (1/(1 - x)) * Sum_{k>=0} x^(2*k+1) / Product_{j=1..2*k+1} (1 - x^j).at n=41A306145Numbers k such that 427*2^k+1 is prime.at n=40A323114