131405274domain: NAppears in sequencesa(n) = binomial(n+8,8)*binomial(n+12,8).at n=6A104478a(n) = binomial(n+6,n)*binomial(n+10,n).at n=8A105253a(n) = binomial(n+5,5)*binomial(n+8,8).at n=10A107420