Squares of numbers in triangle of Eulerian numbers that are not 1.

Terms

a(0) =16a(1) =121a(2) =121a(3) =676a(4) =4356a(5) =676a(6) =3249a(7) =91204a(8) =91204a(9) =3249a(10) =14400a(11) =1418481a(12) =5837056a(13) =1418481a(14) =14400a(15) =61009a(16) =18429849a(17) =243953161a(18) =243953161a(19) =18429849a(20) =61009a(21) =252004a(22) =213393664a(23) =7785238756a(24) =24395316100a(25) =7785238756a(26) =213393664a(27) =252004