-87840domain: ZAppears in sequencesa(n) = a(n-1) + a(n-3) + a(n-4), n >= 4, with initial terms 1,1,-2,-1.at n=29A111571a(n) = Fibonacci(n-1)^2 - Fibonacci(n)^2.at n=13A121646The n-th term of the n-th Dirichlet self-convolution equals n^2.at n=39A163591