Even partition numbers of even numbers.

Terms

a(0) =2a(1) =22a(2) =42a(3) =1002a(4) =2436a(5) =3718a(6) =5604a(7) =12310a(8) =37338a(9) =53174a(10) =105558a(11) =204226a(12) =715220a(13) =1300156a(14) =1741630a(15) =2323520a(16) =4087968a(17) =7089500a(18) =12132164a(19) =15796476a(20) =26543660a(21) =34262962a(22) =92669720a(23) =118114304a(24) =150198136a(25) =190569292a(26) =384276336a(27) =483502844