a(n) is the least k such that there are exactly n solutions in positive integers to the equation x^3 + y^2 = k^2.
A382838
a(n) is the least k such that there are exactly n solutions in positive integers to the equation x^3 + y^2 = k^2.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =105a(4) =665a(5) =1155a(6) =9240a(7) =68265a(8) =200640a(9) =54285a(10) =434280a(11) =3474240a(12) =19120920a(13) =1430715a(14) =451605a(15) =38629305a(16) =3612840a(17) =28902720a(18) =97546680a(19) =154900515a(20) =451605000a(21) =1239204120a(22) =2633760360a(23) =12193335000a(24) =21070082880a(25) =28902720000
External references
- oeis: A382838