Even-indexed terms of the binomial transform equal 1 and the odd-indexed terms of the second binomial transform equal 1.

A090145

Even-indexed terms of the binomial transform equal 1 and the odd-indexed terms of the second binomial transform equal 1.

Terms

    a(0) =1a(1) =-1a(2) =2a(3) =-7a(4) =20a(5) =-31a(6) =2a(7) =-127a(8) =1640a(9) =-511a(10) =-49498a(11) =-2047a(12) =2706860a(13) =-8191a(14) =-199344598a(15) =-32767a(16) =19391577680a(17) =-131071a(19) =-524287a(21) =-2097151a(23) =-8388607a(25) =-33554431

External references