91311

Appears in sequences

• A sequence generated from the Narayana triangle considered as a matrix, or from Pascal's triangle.at n=10A095266
• Let f(n) = exp(Pi*sqrt(n)); sequence gives numbers n such that f(n) - floor(f(n)) < 1/10^4.at n=15A127029
• a(n) is the smallest composite number ending in 1, 3, 7, or 9 with n digits whose first n-1 digits are a(n-1).at n=4A242299