Coefficients of even-indexed Euler polynomials (rising powers without zeros).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =1a(4) =-2a(5) =1a(6) =-3a(7) =5a(8) =-3a(9) =1a(10) =17a(11) =-28a(12) =14a(13) =-4a(14) =1a(15) =-155a(16) =255a(17) =-126a(18) =30a(19) =-5a(20) =1a(21) =2073a(22) =-3410a(23) =1683a(24) =-396a(25) =55a(26) =-6a(27) =1a(28) =-38227a(29) =62881