5322126

Appears in sequences

• Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=1..n where R_n(y) is the n-th row polynomial in y for n>1 with R_1(y)=y.at n=53A187005
• A diagonal of triangle A187005.at n=8A187006