101583domain: NAppears in sequencesDying rabbits: a(n) = a(n-1) + a(n-2) - a(n-9).at n=26A023439a(n) = n*(94 + 5*n + 25*n^2 - 5*n^3 + n^4)/120.at n=27A057703Coefficient of x^n in the expansion of ( (1-x+x^2) / (1-x) )^(3*n).at n=9A372412