Number of idempotent 5X5 0..n matrices of rank 2.

A224116

Number of idempotent 5X5 0..n matrices of rank 2.

Terms

    a(0) =3070a(1) =30410a(2) =136990a(3) =467290a(4) =1240310a(5) =2986210a(6) =6260470a(7) =12345410a(8) =22576030a(9) =39299170a(10) =64929590a(11) =104218930a(12) =160450990a(13) =240932330a(14) =352487350

External references