a(n) = number of distinct solutions to equations 1 +- x +- x^2 +- ... +- x^n = 0 over the complex numbers.

A096195

a(n) = number of distinct solutions to equations 1 +- x +- x^2 +- ... +- x^n = 0 over the complex numbers.

Terms

    a(0) =0a(1) =2a(2) =8a(3) =16a(4) =64a(5) =106a(6) =324a(7) =696a(8) =1856a(9) =4046a(10) =10240a(11) =19084a(12) =49152a(13) =98110a(14) =218140a(15) =464084a(16) =1047744a(17) =2123446a(18) =4718592a(19) =9632740a(20) =20666444a(21) =43283582a(22) =92271828a(23) =186979328a(24) =401822544a(25) =828214466a(26) =1733156480a(27) =3567782988a(28) =7516192768

External references