Number of compositions of even numbers into 9 parts <= n.

Terms

a(0) =1a(1) =256a(2) =9842a(3) =131072a(4) =976563a(5) =5038848a(6) =20176804a(7) =67108864a(8) =193710245a(9) =500000000a(10) =1178973846a(11) =2579890176a(12) =5302249687a(13) =10330523392a(14) =19221679688a(15) =34359738368a(16) =59293938249a(17) =99179645184a(18) =161343848890a(19) =256000000000a(20) =397140023291a(21) =603634608896a(22) =900576330732