(n-1)-st elementary symmetric function of the first n triangular numbers.

A203157

(n-1)-st elementary symmetric function of the first n triangular numbers.

Terms

    a(0) =1a(1) =4a(2) =27a(3) =288a(4) =4500a(5) =97200a(6) =2778300a(7) =101606400a(8) =4629441600a(9) =257191200000

External references