Coefficients of successive polynomials formed by iterating f(x) = -1 + 2x^2. Irregular triangle read by rows.

A321369

Coefficients of successive polynomials formed by iterating f(x) = -1 + 2x^2. Irregular triangle read by rows.

Terms

    a(0) =1a(1) =-1a(2) =2a(3) =1a(4) =-8a(5) =8a(6) =1a(7) =-32a(8) =160a(9) =-256a(10) =128a(11) =1a(12) =-128a(13) =2688a(14) =-21504a(15) =84480a(16) =-180224a(17) =212992a(18) =-131072a(19) =32768a(20) =1a(21) =-512a(22) =43520a(23) =-1462272a(24) =25798656a(25) =-275185664a(26) =1926299648a(27) =-9313976320a(28) =32133218304a(29) =-80648077312

External references