101913domain: NAppears in sequencesa(n) = Sum_{k=0..n} f(k)*f(n-k) where f(k) = A002124(k).at n=42A002125Number of permutations of 1..n containing the relative rank sequence { 51324 } at any spacing.at n=4A158433Row sums of A376832.at n=22A379540