The numbers not expressible as the sum of 4 distinct nonzero squares can be written D*4^n union E. This is D.
A004195
The numbers not expressible as the sum of 4 distinct nonzero squares can be written D*4^n union E. This is D.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =7a(6) =9a(7) =10a(8) =11a(9) =13a(10) =14a(11) =15a(12) =17a(13) =18a(14) =19a(15) =22a(16) =23a(17) =25a(18) =26a(19) =27a(20) =31a(21) =33a(22) =34a(23) =37a(24) =38a(25) =42a(26) =43a(27) =47a(28) =55a(29) =58
External references
- oeis: A004195