Triangle, read by rows, of permutations of length n with k white global corners.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =12a(8) =10a(9) =1a(10) =1a(11) =35a(12) =63a(13) =20a(14) =1a(15) =1a(16) =111a(17) =348a(18) =224a(19) =35a(20) =1a(21) =1a(22) =405a(23) =1920a(24) =2027a(25) =630a(26) =56a(27) =1a(28) =1a(29) =1733