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A032744 Super-4 Numbers (4 * n^4 contains substring '4444' in its decimal expansion). 2
1168, 4972, 7423, 7752, 8431, 10267, 11317, 11487, 11549, 11680, 16588, 16664, 16837, 18257, 18597, 19784, 19933, 22217, 22504, 22819, 22829, 24078, 24331, 24514, 25296, 25698, 26685, 26738, 27812, 27973, 28988, 32466, 32467, 32735 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

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

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Eric Weisstein's World of Mathematics, Super-d Number.

MATHEMATICA

Select[Range[33000], MemberQ[Partition[IntegerDigits[4*#^4], 4, 1], {4, 4, 4, 4}]&] (* Harvey P. Dale, Mar 22 2012 *)

CROSSREFS

Cf. A014569.

Sequence in context: A221350 A227485 A252009 * A185477 A185469 A065656

Adjacent sequences:  A032741 A032742 A032743 * A032745 A032746 A032747

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998.

STATUS

approved

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Last modified December 16 07:41 EST 2017. Contains 296076 sequences.