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A159021
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a(0)=19; a(n)=a(n-1)+floor(Sqrt(a(n-1))), n>0.
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0
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19, 23, 27, 32, 37, 43, 49, 56, 63, 70, 78, 86, 95, 104, 114, 124, 135, 146, 158, 170, 183, 196, 210, 224, 238, 253, 268, 284, 300, 317, 334, 352, 370, 389, 408, 428, 448, 469, 490, 512, 534, 557, 580, 604, 628, 653, 678, 704, 730, 757, 784, 812, 840, 868, 897, 926, 956, 986, 1017
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Row 3 in square array A159016.
This sequence contains an infinity of squares . [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 04 2009]
The squares are of the form (7*2^k)^2 (see A005009). (From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Apr 10 2009.
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CROSSREFS
| Cf. A028392, A005009
Sequence in context: A072305 A095222 A070299 * A100460 A166061 A073319
Adjacent sequences: A159018 A159019 A159020 * A159022 A159023 A159024
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KEYWORD
| nonn
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AUTHOR
| Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 02 2009
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EXTENSIONS
| More terms from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Apr 10 2009
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