a(n) = A130179(n)/81.

Terms

a(0) =28a(1) =96a(2) =234a(3) =437a(4) =696a(5) =1050a(6) =1476a(7) =1974a(8) =2592a(9) =3300a(10) =4087a(11) =4964a(12) =5920a(13) =7047a(14) =8272a(15) =9595a(16) =11016a(17) =12535a(18) =14152a(19) =15867a(20) =17680a(21) =19591a(22) =21600a(23) =23858a(24) =26235a(25) =28552a(26) =31140a(27) =33847a(28) =36660a(29) =39592