p-INVERT of (1,1,1,1,1,...), where p(S) = (1 - S^2)^3.

Terms

a(0) =0a(1) =3a(2) =6a(3) =15a(4) =36a(5) =85a(6) =198a(7) =456a(8) =1040a(9) =2352a(10) =5280a(11) =11776a(12) =26112a(13) =57600a(14) =126464a(15) =276480a(16) =602112a(17) =1306624a(18) =2826240a(19) =6094848a(20) =13107200a(21) =28114944a(22) =60162048a(23) =128450560a(24) =273678336a(25) =581959680a(26) =1235222528a(27) =2617245696a(28) =5536481280a(29) =11693719552