(n-1)-st elementary symmetric function of the first n terms of (1,2,1,4,1,6,1,8,...)=(A124625 for n>1).

A203192

(n-1)-st elementary symmetric function of the first n terms of (1,2,1,4,1,6,1,8,...)=(A124625 for n>1).

Terms

    a(0) =1a(1) =3a(2) =5a(3) =22a(4) =30a(5) =188a(6) =236a(7) =1936a(8) =2320a(9) =23584a(10) =27424a(11) =332928a(12) =379008a(13) =5352192a(14) =5997312a(15) =96602112a(16) =106924032a(17) =1934954496a(18) =2120749056a(19) =42600775680a(20) =46316666880

External references