272797

Appears in sequences

• Irregular triangle read by rows: first row is 1, and n-th row gives the coefficients of x^(n - 1)*R(n,x + 1/x)/(x + 1/x), where R(n,x) is the n-th row polynomial for A060187.at n=52A143506
• Numbers n such that A160691(n)=12.at n=19A158963