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A062690
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Smallest triangular number that contains the string n in its exact center.
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2
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0, 1, 120, 3, 741, 153, 6, 171, 780, 190, 10, 111156, 1128, 131328, 2145, 15, 3160, 1176, 4186, 101926, 152076, 21, 1225, 102378, 3240, 5253, 7260, 1275, 28, 232903, 113050, 9316, 1326, 133386, 2346, 5356, 36, 1378, 7381, 133903, 3403, 2415
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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EXAMPLE
| a[13]=131328 is the smallest triangular number that contains the digit string 13 in its exact center.
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CROSSREFS
| Sequence in context: A090217 A062829 A163598 * A127148 A051727 A174867
Adjacent sequences: A062687 A062688 A062689 * A062691 A062692 A062693
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KEYWORD
| easy,nonn,base
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AUTHOR
| Erich Friedman (efriedma(AT)stetson.edu), Jul 04 2001
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EXTENSIONS
| Corrected by Harvey P. Dale (hpd1(AT)nyu.edu), Jul 20 2001
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