80660

Appears in sequences

• Number of subsets of {1,2,3,...,n} that sum to 0 mod 13.at n=20A068034
• a(0)=1, a(1)=6, a(n) = 7*a(n-1) - 2*a(n-2).at n=6A122074
• Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 8.at n=8A136938
• Numbers k that divide 2^k + 4.at n=13A244673
• Number of (n+3)X(1+3) 0..1 arrays with each row and column divisible by 13, read as a binary number with top and left being the most significant bits.at n=16A262482