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A117803
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Triangular numbers for which the sum of the digits is a cube.
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0
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0, 1, 10, 5778, 5886, 6786, 7875, 17766, 17955, 27495, 29646, 31878, 36856, 38781, 43956, 46665, 46971, 49455, 49770, 55279, 58653, 61776, 64980, 68265, 74691, 75078, 78606, 85491, 85905, 89253, 93096, 93528, 97461, 109278, 109746, 117855
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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EXAMPLE
| 5778 is in the sequence because (1) it is a triangular number and (2) the sum of its digits 5+7+7+8=27 is a cube.
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MATHEMATICA
| Select[Accumulate[Range[500]], IntegerQ[Power[Total[IntegerDigits[#]], (3)^-1]]&] [From Harvey P. Dale, Dec. 19, 2010]
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CROSSREFS
| Cf. A000217.
Sequence in context: A199354 A180419 A061888 * A199520 A169621 A121787
Adjacent sequences: A117800 A117801 A117802 * A117804 A117805 A117806
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KEYWORD
| nonn,base
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AUTHOR
| Luc Stevens (lms022(AT)yahoo.com), Apr 29 2006
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