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Search: id:A000694
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| A000694 |
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Related to population of numbers of form x^2 + y^2.
(Formerly M1021 N0384)
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+0
1
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| 1, 2, 4, 6, 11, 19, 34, 63, 117, 218, 411, 780, 1487, 2849, 5477, 10555, 20419, 39563, 76805, 149360, 290896, 567321, 1107775, 2165487, 4237384, 8299283
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
D. Shanks, The second-order term in the asymptotic expansion of B(x), Math. Comp., 18 (1964), 75-86.
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LINKS
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Index entries for sequences related to populations of quadratic forms
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CROSSREFS
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Sequence in context: A116732 A048239 A000786 this_sequence A164137 A018170 A113913
Adjacent sequences: A000691 A000692 A000693 this_sequence A000695 A000696 A000697
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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