48835domain: NAppears in sequencesNumber of inequivalent planar partitions of n, when considering them as 3D objects.at n=23A000786Number of (n+4)X7 0..2 matrices with each 5X5 subblock idempotent.at n=7A224620a(n) is the number of primes occurring between A053182(n) and A053183(n) (excluding the endpoints).at n=18A238399