0,2

1,

2*x - 1,

4*x^2 - 4*x,

8*x^3 - 12*x^2 + 2,

16*x^4 - 32*x^3 + 16*x,

32*x^5 - 80*x^4 + 80*x^2 - 16,

64*x^6 - 192*x^5 + 320*x^3 - 192*x

With zeros: A004174/A004175.

Row sums and constant terms are (-1)^n*A009006.

Sequence in context: A008312 A060723 A074763 this_sequence A008346 A119282 A095293

Adjacent sequences: A099929 A099930 A099931 this_sequence A099933 A099934 A099935

sign,tabf

Ralf Stephan, Nov 06 2004