a(n) = n! + (n-1)! + (n-2)! + (n-3)! + n - 3.

A341300

a(n) = n! + (n-1)! + (n-2)! + (n-3)! + n - 3.

Terms

    a(0) =10a(1) =34a(2) =154a(3) =873a(4) =5908a(5) =46205a(6) =408966a(7) =4037047a(8) =43948808a(9) =522910089a(10) =6749568010a(11) =93924230411

External references