368168domain: NAppears in sequencesNumber of permutations of 3 copies of 1..n avoiding adjacent step pattern up, up, down, up, up, up.at n=3A177633Number of standard Young tableaux for partitions of nonnegative integers into distinct parts with largest part n.at n=5A219275a(n) = Fibonacci(n+1)^5 - Fibonacci(n-1)^5.at n=6A358934