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A071377
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Number of positive integers <= n which are the sum of 3 squares.
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1
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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; internal format)
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OFFSET
| 0,2
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COMMENTS
| Sequence is 2-regular.
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REFERENCES
| J.-P. Allouche and J. Shallit, The ring of k-regular sequences, Theoretical Computer Sci., 98 (1992), 163-197.
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LINKS
| J.-P. Allouche and J. Shallit, The ring of k-regular sequences, Theoretical Computer Sci., 98 (1992), 163-197.
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CROSSREFS
| Partial sums of A071374 (with its zeroth term omitted).
Sequence in context: A145569 A172475 A171970 * A076946 A064524 A153249
Adjacent sequences: A071374 A071375 A071376 * A071378 A071379 A071380
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jun 12 2002
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