For n >= 3, a(n) = least positive integer > a(n-1) and not a(i)^2 + a(j)^2 + a(k)^2 for 1<=i<=j<=k<=n.
A026500
For n >= 3, a(n) = least positive integer > a(n-1) and not a(i)^2 + a(j)^2 + a(k)^2 for 1<=i<=j<=k<=n.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =5a(4) =6a(5) =7a(6) =8a(7) =9a(8) =10a(9) =12a(10) =13a(11) =14a(12) =15a(13) =16a(14) =17a(15) =20a(16) =21a(17) =22a(18) =23a(19) =24a(20) =25a(21) =28a(22) =29a(23) =30a(24) =31a(25) =32a(26) =36a(27) =37a(28) =39a(29) =40
External references
- oeis: A026500