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Search: id:A117723
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| A117723 |
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Numbers for which the product of the digits is the square root of the sum of the digits. |
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+0
1
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| 0, 1, 112, 121, 211, 1111113, 1111131, 1111311, 1113111, 1131111, 1311111, 3111111, 11111111111122, 11111111111212, 11111111111221, 11111111112112, 11111111112121, 11111111112211, 11111111121112, 11111111121121
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OFFSET
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1,3
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EXAMPLE
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1111113 is in the sequence because (1)the product of its digits is 1*1*1*1*1*1*3=3,(2)the sum of its digits is 1+1+1+1+1+1+3=9 and 3 is the square root of 9.
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CROSSREFS
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Sequence in context: A096680 A109383 A036301 this_sequence A157662 A095615 A061281
Adjacent sequences: A117720 A117721 A117722 this_sequence A117724 A117725 A117726
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KEYWORD
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base,nonn
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), Apr 13 2006
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