a(n)=T(n,n+2), array T as in A049723.

Terms

a(0) =9a(1) =22a(2) =39a(3) =60a(4) =92a(5) =129a(6) =169a(7) =222a(8) =271a(9) =335a(10) =400a(11) =476a(12) =561a(13) =638a(14) =738a(15) =831a(16) =939a(17) =1052a(18) =1157a(19) =1297a(20) =1422a(21) =1562a(22) =1699a(23) =1840a(24) =2008a(25) =2165a(26) =2337a(27) =2510a(28) =2682a(29) =2879