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A077121
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Number of integer squares <= n^3.
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7
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1, 2, 3, 6, 9, 12, 15, 19, 23, 28, 32, 37, 42, 47, 53, 59, 65, 71, 77, 83, 90, 97, 104, 111, 118, 126, 133, 141, 149, 157, 165, 173, 182, 190, 199, 208, 217, 226, 235, 244, 253, 263, 273, 282, 292, 302, 312, 323, 333, 344, 354, 365, 375, 386, 397, 408, 420
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| a(n) = A000093(n) + 1.
a(n) = number of terms in n-th row of A167222. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 31 2009]
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FORMULA
| a(n) = floor(n^(3/2))+1.
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EXAMPLE
| Squares <= 3^3=27: 0, 1, 4, 9, 16 and 25, hence a(3)=6;
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CROSSREFS
| Cf. A065733, A077113.
Cf. A167223. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 31 2009]
Sequence in context: A131975 A057474 A145441 * A140495 A174873 A008810
Adjacent sequences: A077118 A077119 A077120 * A077122 A077123 A077124
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 29 2002
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