Similar submodules of icosian ring of index f(n)^2 where f(n) is the n-th positive integer represented by the quadratic form x^2 + xy - y^2.
A035284
Similar submodules of icosian ring of index f(n)^2 where f(n) is the n-th positive integer represented by the quadratic form x^2 + xy - y^2.
Terms
- a(0) =1a(1) =10a(2) =12a(3) =20a(4) =48a(5) =66a(6) =80a(7) =120a(8) =97a(9) =120a(10) =128a(11) =200a(12) =168a(13) =480a(14) =240a(15) =100a(16) =576a(17) =240a(18) =248a(19) =370a(20) =288a(21) =800a(22) =320a(23) =792a(24) =281a(25) =360a(26) =960a(27) =960a(28) =970a(29) =408
External references
- oeis: A035284