Triangular sequence from coefficients of a switched even -odd polynomial recursion: Even:p(x,n)=2*x*p(x, n - 1) - p(x, n - 2); Odd:p(x,n)=(1 - 2*x)*p(x, n - 1) - p(x, n - 2);.

A137406

Triangular sequence from coefficients of a switched even -odd polynomial recursion: Even:p(x,n)=2*x*p(x, n - 1) - p(x, n - 2); Odd:p(x,n)=(1 - 2*x)*p(x, n - 1) - p(x, n - 2);.

Terms

    a(0) =1a(1) =1a(2) =-2a(3) =-1a(4) =2a(5) =-4a(6) =-2a(7) =6a(8) =-8a(9) =8a(10) =1a(11) =-6a(12) =16a(13) =-16a(14) =16a(15) =3a(16) =-14a(17) =36a(18) =-56a(19) =48a(20) =-32a(21) =-1a(22) =12a(23) =-44a(24) =88a(25) =-128a(26) =96a(27) =-64a(28) =-4a(29) =28

External references