G.f. A(x) satisfies: A(x)^2 equals the g.f. of A110630, which consists entirely of numbers 1 through 4.
A112570
G.f. A(x) satisfies: A(x)^2 equals the g.f. of A110630, which consists entirely of numbers 1 through 4.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-1a(5) =2a(6) =0a(7) =1a(8) =-2a(9) =5a(10) =-5a(11) =4a(12) =-6a(13) =18a(14) =-30a(15) =35a(16) =-43a(17) =84a(18) =-167a(19) =261a(20) =-352a(21) =545a(22) =-1010a(23) =1790a(24) =-2783a(25) =4207a(26) =-7025a(27) =12464a(28) =-21071a(29) =33567
External references
- oeis: A112570