First differences of A135992.

Terms

a(0) =0a(1) =2a(2) =-1a(3) =6a(4) =-3a(5) =16a(6) =-8a(7) =42a(8) =-21a(9) =110a(10) =-55a(11) =288a(12) =-144a(13) =754a(14) =-377a(15) =1974a(16) =-987a(17) =5168a(18) =-2584a(19) =13530a(20) =-6765a(21) =35422a(22) =-17711a(23) =92736a(24) =-46368a(25) =242786a(26) =-121393a(27) =635622a(28) =-317811a(29) =1664080