Triangle read by rows: Eulerian triangle that produces sums of even powers.

Terms

a(0) =2a(1) =4a(2) =4a(3) =8a(4) =32a(5) =8a(6) =16a(7) =176a(8) =176a(9) =16a(10) =32a(11) =832a(12) =2112a(13) =832a(14) =32a(15) =64a(16) =3648a(17) =19328a(18) =19328a(19) =3648a(20) =64a(21) =128a(22) =15360a(23) =152448a(24) =309248a(25) =152448a(26) =15360a(27) =128a(28) =256a(29) =63232