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Search: id:A107677
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| A107677 |
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Numbers A such that the square of concatenation AA is of form NNMM. |
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+0
2
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| 8, 89, 98, 406, 593, 998, 4445, 4544, 5455, 5554, 9899, 9998, 34687, 44443, 55556, 65312, 90242, 99998, 219374, 285713, 286714, 296297, 297296, 340066, 362636, 363637, 374219, 416989, 583010, 625780, 636362, 637363, 659933, 702703, 703702
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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N and M must be of equal length, leading zeros are allowed. The corresponding values NM are in A107678.
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EXAMPLE
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593 is in the sequence because we have 593593^2 = 352352649649; 998 is in the sequence since 998998^2 = 997997004004 (M has two leading zeros); 219374 is in the sequence since 219374219374^2 = 48125048125951876951876 (N has one leading zero).
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CROSSREFS
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Cf. A107678, A106497.
Sequence in context: A006750 A082783 A137144 this_sequence A084005 A137494 A068498
Adjacent sequences: A107674 A107675 A107676 this_sequence A107678 A107679 A107680
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KEYWORD
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nonn,base
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), May 20 2005
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EXTENSIONS
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Edited, corrected and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), May 22 2005
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