Alternating row sums of triangle A134134.

Terms

a(0) =1a(1) =1a(2) =5a(3) =15a(4) =93a(5) =551a(6) =4129a(7) =33607a(8) =312929a(9) =3179343a(10) =35602881a(11) =432201743a(12) =5678740945a(13) =80142780751