87968

Appears in sequences

• Expansion of 1/((1-x)*(1+x+2*x^2+x^3)).at n=43A077913
• Irregular triangle, read by rows, of coefficients of polynomials that are the "nonstandard" factor of polynomials yielding the columns (up to sign) of triangle A290053, beginning with column 3.at n=23A290761