First numerator and then denominator of elements to right of central elements of 1/2-Pascal triangle (by row), excluding 1's.

A046227

First numerator and then denominator of elements to right of central elements of 1/2-Pascal triangle (by row), excluding 1's.

Terms

    a(0) =3a(1) =2a(2) =5a(3) =2a(4) =11a(5) =2a(6) =7a(7) =2a(8) =9a(9) =9a(10) =2a(11) =20a(12) =27a(13) =2a(14) =11a(15) =2a(16) =67a(17) =2a(18) =19a(19) =13a(20) =2a(21) =147a(22) =2a(23) =105a(24) =2a(25) =51a(26) =2a(27) =15a(28) =2a(29) =126

External references