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A067504
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Powers of 7 with digit sum also a power of 7.
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7
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OFFSET
| 0,2
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CROSSREFS
| Cf. A067499, A067500, A067501, A067502, A067503.
Sequence in context: A067511 A013740 A060759 * A203382 A203705 A178172
Adjacent sequences: A067501 A067502 A067503 * A067505 A067506 A067507
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KEYWORD
| base,easy,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 11 2002
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EXTENSIONS
| Next terms are 7^4433, 7^30810 - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 18 2002
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