Triangle read by rows: T(n,k) = 2 * A011971(n,k) - 1.

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =5a(5) =9a(6) =9a(7) =13a(8) =19a(9) =29a(10) =29a(11) =39a(12) =53a(13) =73a(14) =103a(15) =103a(16) =133a(17) =173a(18) =227a(19) =301a(20) =405a(21) =405a(22) =509a(23) =643a(24) =817a(25) =1045a(26) =1347a(27) =1753a(28) =1753a(29) =2159