Brent's irregular triangle T[r,k] related to Hardy-Littlewood constants of prime gaps 2r.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =4a(6) =1a(7) =4a(8) =6a(9) =2a(10) =30a(11) =56a(12) =30a(13) =4a(14) =18a(15) =40a(16) =28a(17) =6a(18) =15a(19) =40a(20) =36a(21) =12a(22) =1a(23) =30a(24) =92a(25) =100a(26) =44a(27) =6a(28) =180a(29) =624