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.

1, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 25, 28, 29, 30, 31, 32, 36, 37, 39, 40, 44, 45, 47, 49, 52, 55, 56, 58, 60, 63, 64, 65, 69, 71, 72, 76, 78, 79, 80, 84, 85, 87, 92, 93, 95, 100, 103, 104, 111, 112, 119

Offset

1,2

Links

Table of n, a(n) for n=1..61.

Crossrefs

Sequence in context: A039220 A048135 A304812 * A091213 A211347 A258777

Adjacent sequences: A026497 A026498 A026499 * A026501 A026502 A026503

Keyword

nonn,easy

Author

Clark Kimberling

Extensions

More terms from Naohiro Nomoto, Sep 15 2001

Status

approved