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A032747 Super-7 Numbers (7 x n^7 contains substring '7777777' in its decimal expansion). +0
2
140997, 490996, 1184321, 1259609, 1409970, 1783166, 1886654, 1977538, 2457756, 2714763, 2750425, 2980991, 3043607, 3283057, 3689639, 4191601, 4258476, 4642725, 4909960, 4973029, 5242829, 5349973, 5444788, 5523544, 5682065 (list; graph; listen)
OFFSET

0,1

REFERENCES

C. A. Pickover, "Keys to Infinity", New York: Wiley, p. 7, 1995.

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

CROSSREFS

Cf. A014569.

Sequence in context: A018234 A156409 A036527 this_sequence A164527 A086999 A023089

Adjacent sequences: A032744 A032745 A032746 this_sequence A032748 A032749 A032750

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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