Triangle R, read by rows, where column k of R equals column 0 of P^(2k+1) where P=A135880.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =6a(7) =12a(8) =5a(9) =1a(10) =25a(11) =63a(12) =30a(13) =7a(14) =1a(15) =138a(16) =421a(17) =220a(18) =56a(19) =9a(20) =1a(21) =970a(22) =3472a(23) =1945a(24) =525a(25) =90a(26) =11a(27) =1a(28) =8390a(29) =34380