Triangle read by rows: distribution of adjacent transpositions in involutions.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =5a(7) =4a(8) =1a(9) =13a(10) =10a(11) =3a(12) =37a(13) =29a(14) =9a(15) =1a(16) =112a(17) =88a(18) =28a(19) =4a(20) =363a(21) =288a(22) =96a(23) =16a(24) =1a(25) =1235a(26) =984a(27) =336a(28) =60a(29) =5