Number of compositions of even natural numbers into 8 parts <= n.

Terms

a(0) =1a(1) =128a(2) =3281a(3) =32768a(4) =195313a(5) =839808a(6) =2882401a(7) =8388608a(8) =21523361a(9) =50000000a(10) =107179441a(11) =214990848a(12) =407865361a(13) =737894528a(14) =1281445313a(15) =2147483648a(16) =3487878721a(17) =5509980288a(18) =8491781521a(19) =12800000000a(20) =18911429681a(21) =27437936768a(22) =39155492641a(23) =55037657088a(24) =76293945313a(25) =104413532288