A064876 Last of four sequences representing the lexicographical minimal decomposition of n in 4 squares: n = A064873(n)^2 + A064874(n)^2 + A064875(n)^2 + a(n)^2.

0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 4, 4, 3, 3, 4, 4, 3, 3, 4, 5, 5, 5, 5, 5, 5, 5, 4, 4, 5, 5, 6, 6, 6, 6, 6, 5, 5, 5, 6, 6, 6, 6, 4, 7, 7, 7, 6, 7, 7, 7, 6, 7, 7, 7, 7, 6, 6, 6, 8, 8, 8, 7, 8, 8, 6, 6, 6, 8, 7, 7, 6, 8, 7, 7, 8, 9, 9, 9, 8, 9, 9, 9, 6, 8, 9, 9, 9, 8, 9, 9, 8, 9, 7, 7, 10, 10, 10

Offset

0,5

Links

Table of n, a(n) for n=0..102.

Example

a(18) = 3: 18 = A064873(18)^2 + A064874(18)^2 + A064875(18)^2 + a(18)^2 = 0 + 0 + 9 + 9 and the other decompositions (0, 1, 1, 4) and (1, 2, 2, 3) are greater than (0, 0, 3, 3).

Crossrefs

Cf. A064873, A064874, A064875, A064877.

Sequence in context: A193677 A281855 A137921 * A262689 A319816 A343437

Adjacent sequences: A064873 A064874 A064875 * A064877 A064878 A064879

Keyword

nonn

Author

Reinhard Zumkeller, Oct 10 2001

Status

approved