Binomial transform of the sum of the first n even squares (A002492).

Terms

a(0) =0a(1) =4a(2) =28a(3) =128a(4) =480a(5) =1600a(6) =4928a(7) =14336a(8) =39936a(9) =107520a(10) =281600a(11) =720896a(12) =1810432a(13) =4472832a(14) =10895360a(15) =26214400a(16) =62390272a(17) =147062784a(18) =343670784a(19) =796917760a(20) =1835008000a(21) =4198498304a(22) =9550430208a(23) =21609054208a(24) =48653926400a(25) =109051904000a(26) =243403849728a(27) =541165879296