16035550531domain: NAppears in sequencesRencontres numbers: number of permutations of [n] with exactly two fixed points.at n=14A000387Number of permutations of length n with 4 consecutive ascending pairs.at n=14A001260Duplicate of A000387.at n=14A145221Number of derangements on n elements with an odd number of cycles.at n=14A216779