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A071377 Number of positive integers <= n which are the sum of 3 squares. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Sequence is 2-regular.

REFERENCES

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

LINKS

Table of n, a(n) for n=0..65.

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

CROSSREFS

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

Sequence in context: A213851 A172475 A171970 * A076946 A302780 A064524

Adjacent sequences:  A071374 A071375 A071376 * A071378 A071379 A071380

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 12 2002

STATUS

approved

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Last modified September 21 19:57 EDT 2020. Contains 337273 sequences. (Running on oeis4.)