f-Pascal's triangle where f(n) = n^2 = A000290(n).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =26a(12) =50a(13) =26a(14) =1a(15) =1a(16) =677a(17) =3176a(18) =3176a(19) =677a(20) =1a(21) =1a(22) =458330a(23) =10545305a(24) =20173952a(25) =10545305a(26) =458330a(27) =1a(28) =1a(29) =210066388901