Triangle read by rows: a(1,1) = 1. a(m,m) = product of the terms in row m-1. For n < m, a(m,n) = a(m-1,n) + (product of the terms in row m-1).

A159931

Triangle read by rows: a(1,1) = 1. a(m,m) = product of the terms in row m-1. For n < m, a(m,n) = a(m-1,n) + (product of the terms in row m-1).

Terms

    a(0) =1a(1) =2a(2) =1a(3) =4a(4) =3a(5) =2a(6) =28a(7) =27a(8) =26a(9) =24a(10) =471772a(11) =471771a(12) =471770a(13) =471768a(14) =471744

External references