Even numbers in the triangle of Eulerian numbers.

Terms

a(0) =4a(1) =26a(2) =66a(3) =26a(4) =302a(5) =302a(6) =120a(7) =2416a(8) =120a(9) =502a(10) =14608a(11) =88234a(12) =156190a(13) =88234a(14) =14608a(15) =502a(16) =47840a(17) =455192a(18) =1310354a(19) =1310354a(20) =455192a(21) =47840a(22) =2036a(23) =2203488a(24) =9738114a(25) =15724248a(26) =9738114a(27) =2203488a(28) =2036a(29) =66318474