Triangle read by rows: coefficients of type B alternating Eulerian polynomials.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =2a(5) =3a(6) =11a(7) =13a(8) =13a(9) =11a(10) =57a(11) =76a(12) =118a(13) =76a(14) =57a(15) =361a(16) =597a(17) =962a(18) =962a(19) =597a(20) =361a(21) =2763a(22) =5270a(23) =9733a(24) =10548a(25) =9733a(26) =5270a(27) =2763a(28) =24611a(29) =53849