3485735825domain: NAppears in sequencesa(n) = 3^n - 2^n.at n=20A001047Nexus numbers (n+1)^20 - n^20.at n=2A022536a(n) = 9^n - 4^n.at n=10A118004Number of second differences of arrays of length n + 2 of numbers in 0..2.at n=17A228212Number of third differences of arrays of length n+3 of numbers in 0..2.at n=16A228254