Column 0 of triangle A194949 = shifted row sums of triangle A194949.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =20a(5) =72a(6) =260a(7) =996a(8) =3772a(9) =14852a(10) =58204a(11) =234236a(12) =934180a(13) =3825428a(14) =15493292a(15) =64009212a(16) =263052756a(17) =1096235844a(18) =4537607788a(19) =19075092364a(20) =79566093524a(21) =336047432420