96021948

Appears in sequences

• a(n) = A019566(n)/9, where A019566(n) = concat(n,...,1) - concat(1,...,n).at n=8A083449
• a(n) = A099009(n)/9.at n=8A132155
• Convolution of nonzero repunits (A002275) with themselves.at n=7A272525