419430401domain: NAppears in sequencesa(n) = n*2^(n-1) + 1.at n=25A005183a(n) = 2^n * n^2 + 1.at n=20A248917Number of n X 6 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.at n=28A265989Expansion of Sum_{n>=1} ( (2 + x^n)^n - 2^n ).at n=24A318637