Number of compositions of even natural numbers in 7 parts <= n.

Terms

a(0) =1a(1) =64a(2) =1094a(3) =8192a(4) =39063a(5) =139968a(6) =411772a(7) =1048576a(8) =2391485a(9) =5000000a(10) =9743586a(11) =17915904a(12) =31374259a(13) =52706752a(14) =85429688a(15) =134217728a(16) =205169337a(17) =306110016a(18) =446935870a(19) =640000000a(20) =900544271a(21) =1247178944a(22) =1702412724a(23) =2293235712a(24) =3051757813a(25) =4015905088