30951

Appears in sequences

• Number of nonzero palindromes of length n containing the digit '0'.at n=8A050720
• Number of nonzero palindromes of length n containing the digit '0'.at n=9A050720
• a(n) = floor(sqrt(2*n!)).at n=12A129960
• Number of nonempty subsets of {1, 2, ..., n} with <=10 pairwise coprime elements.at n=28A187271
• Number of n-digit numbers containing the digit '0'.at n=4A229127
• Let a(0)=1. Then a(n) = sums of consecutive strings of positive integers of length 3*n, starting with the integer 2.at n=19A289721
• Place n equally spaced points on each side of an equilateral triangle, and join each of these points by a chord to the 2*n new points on the other two sides: sequence gives number of vertices in the resulting planar graph.at n=12A366483
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^6/(1 + x*A(x)^3).at n=6A378892