[r]*[2r]*[3r]*...[nr], where r=(1+sqrt(5))/2 and []=floor.

A147998

[r]*[2r]*[3r]*...[nr], where r=(1+sqrt(5))/2 and []=floor.

Terms

    a(0) =1a(1) =3a(2) =12a(3) =72a(4) =576a(5) =5184a(6) =57024a(7) =684288a(8) =9580032a(9) =153280512a(10) =2605768704a(11) =49509605376

External references