116592

Appears in sequences

• Number of stars brighter than visual magnitude n-1.at n=13A053406
• a(n) = |{m : multiplicative order of 9 mod m = n}|.at n=47A059891
• Array read by downward antidiagonals: A(n,k) = A(n,k-1) + (k+1)*(A(n-1,k) + A(n-1,k+1)) with A(n,0) = A(n-1,0) + A(n-1,1), A(0,k) = 1, n >= 0, k >= 0.at n=32A379460