22882

Appears in sequences

• Number of walks from (0,0) to (n,n) in the region 0 <= x-y <= 6 with the steps (1,0), (0, 1), (2,0) and (0,2).at n=7A127620
• a(n) = n^3/3 - 7*n/3 + 4.at n=41A270809
• Numbers with digits 2 and 8 only.at n=36A284922
• a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} i.at n=41A333297
• G.f. A(x) satisfies: 1 - x = Product_{n>=1} (1 + x^(2*n)*A(x)^2) / (1 + x^n*A(x)).at n=13A352176
• Numbers with arithmetic derivative which is a palindromic prime number (A002385).at n=38A359332