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A030467
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Numbers n such that n^2 is a concatenation of two successive numbers.
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19
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428, 573, 727, 846, 7810, 36365, 63636, 326734, 673267, 4545454, 5454547, 47058823, 52941178, 331983807, 332667334, 384615386, 422892989, 475524477, 524475524, 577107103, 615384615, 667332667, 668016194
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 428^2 = 183184, the concatenation of 183 and 184.
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CROSSREFS
| Cf. A030465, A030466, A054214, A054215, A054216, A020339, A020340.
Sequence in context: A173374 A054984 A095811 * A173798 A177328 A203612
Adjacent sequences: A030464 A030465 A030466 * A030468 A030469 A030470
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KEYWORD
| nonn,base,nice
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com)
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