Numerators of coefficients in expansion of (1 + x)^(2/3).

Terms

a(0) =1a(1) =2a(2) =-1a(3) =4a(4) =-7a(5) =14a(6) =-91a(7) =208a(8) =-494a(9) =10868a(10) =-27170a(11) =69160a(12) =-535990a(13) =1401820a(14) =-3704810a(15) =29638480a(16) =-79653415a(17) =215532770a(18) =-5280552865a(19) =14452039420a(20) =-39743108405a(21) =329300041070a(22) =-913059204785