A071377 Number of positive integers <= n which are the sum of 3 squares.

1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 12, 13, 13, 14, 15, 16, 17, 18, 19, 20, 20, 21, 22, 23, 24, 24, 25, 26, 26, 27, 28, 29, 30, 31, 32, 33, 33, 34, 35, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45, 46, 47, 47, 48, 49, 50, 51, 51, 52, 53, 53, 54, 55, 56

Offset: 0

Author

N. J. A. Sloane, Jun 12 2002

Keywords

• nonn

Comments

Sequence is 2-regular.

Links

• J.-P. Allouche and J. Shallit, The ring of k-regular sequences, preprint.
• J.-P. Allouche and J. Shallit, The ring of k-regular sequences, Theoretical Computer Sci., Vol. 98 (1992), pp. 163-197.

Crossrefs

Partial sums of A071374 (with its zeroth term omitted).