106275domain: NAppears in sequencesa(n) = n*(n+1)*(n^2 + n + 4)/4.at n=25A061316Chebyshev U(n,x) polynomial evaluated at x=163.at n=2A097737Product of two consecutive odd numbers k, k+2 such that (k*(k+2))+-2 are primes.at n=11A174383a(n) = n^4 + 4*n^2 + 3.at n=18A304726