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Search: id:A000692
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| A000692 |
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An approximation to population of x^2 + y^2.
(Formerly M2311 N0913)
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+0
1
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| 1, 3, 4, 5, 9, 15, 27, 50, 92, 171, 322, 610, 1161, 2220, 4260, 8201, 15828, 30622, 59362, 115287, 224260, 436871, 852161, 1664196, 3253531, 6366973, 12471056
(list; graph; listen)
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OFFSET
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0,2
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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: A099560 A050161 A117125 this_sequence A080552 A056797 A029727
Adjacent sequences: A000689 A000690 A000691 this_sequence A000693 A000694 A000695
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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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