146227200domain: NAppears in sequencesCoefficients of Chebyshev T polynomials: a(n) = A053120(n+12, n), n >= 0.at n=13A006976Square array read by antidiagonals downwards: super Patalan numbers of order 8.at n=23A248332a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-2*k) * binomial(2*k+2,2*n-6*k+1).at n=29A387556