Triangle of Euler-Bernoulli or Entringer numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =1a(6) =5a(7) =5a(8) =4a(9) =2a(10) =16a(11) =16a(12) =14a(13) =10a(14) =5a(15) =61a(16) =61a(17) =56a(18) =46a(19) =32a(20) =16a(21) =272a(22) =272a(23) =256a(24) =224a(25) =178a(26) =122a(27) =61a(28) =1385a(29) =1385