26311

Appears in sequences

• Numbers n such that binomial(2n, n) - 1 is prime.at n=43A066726
• Number of length-n American English expressions for nonnegative integers (spaces, hyphens, and commas excluded).at n=25A121064
• Number of nX5 0..3 arrays with no more than floor(nX5/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=1A222875
• T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=16A222878
• Number of 2Xn 0..3 arrays with no more than floor(2Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=4A222879
• Indices of the start of 10 successive distinct digits in the decimal expansion of e (2.718281828...).at n=21A258166
• a(n) is the number of self-complementary score sequences that are possible for strong tournaments on n vertices.at n=20A351869
• Number of length-n American English expressions for positive integers (spaces, hyphens, and commas excluded).at n=25A362449