(n-1)-st elementary symmetric function of the first n terms of the periodic sequence (3,1,3,1,3,1,3,1,...).
A203231
(n-1)-st elementary symmetric function of the first n terms of the periodic sequence (3,1,3,1,3,1,3,1,...).
Terms
- a(0) =1a(1) =4a(2) =15a(3) =24a(4) =81a(5) =108a(6) =351a(7) =432a(8) =1377a(9) =1620a(10) =5103a(11) =5832a(12) =18225a(13) =20412a(14) =63423a(15) =69984a(16) =216513a(17) =236196a(18) =728271a(19) =787320a(20) =2421009a(21) =2598156a(22) =7971615a(23) =8503056a(24) =26040609a(25) =27634932a(26) =84499119a(27) =89282088a(28) =272629233a(29) =286978140
External references
- oeis: A203231