Weights of rotation-symmetric functions in n variables.

Terms

a(0) =1a(1) =4a(2) =6a(3) =18a(4) =36a(5) =80a(6) =172a(7) =360a(8) =760a(9) =1576a(10) =3264a(11) =6720a(12) =13776a(13) =28160a(14) =57376a(15) =116640a(16) =236608a(17) =479104a(18) =968640a(19) =1955712a(20) =3944064a(21) =7945856a(22) =15993856a(23) =32168448a(24) =64656640a(25) =129879040a(26) =260759040a(27) =523289088a(28) =1049711616a(29) =2104967168