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A053683
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Number of nonprimes <= prime(n)^2.
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0
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2, 5, 16, 34, 91, 130, 228, 289, 430, 695, 799, 1150, 1418, 1566, 1880, 2400, 2994, 3202, 3880, 4366, 4624, 5430, 6003, 6921, 8246, 8949, 9315, 10068, 10458, 11246, 14252, 15185, 16628, 17131, 19712, 20254, 21920, 23654, 24846, 26688, 28605
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| Up to 25=p(3)^2, the 16 nonprimes are 1,4,6,8,9,10,12,14,15,16,18,20,21,22,24,25.
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CROSSREFS
| A000879.
Sequence in context: A139022 A196025 A174988 * A082085 A179992 A054971
Adjacent sequences: A053680 A053681 A053682 * A053684 A053685 A053686
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KEYWORD
| easy,nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Feb 16 2000
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