|
Search: id:A066734
|
|
|
| A066734 |
|
Numbers such that the nonzero product of the digits of its 4-th power is also a 4-th power. |
|
+0
1
|
|
| 1, 118, 144, 211, 427, 739, 1836, 8958, 19638, 20528, 21454, 22359, 24533, 26022, 27378, 29648, 33038, 33204, 33648, 40226, 40262, 46416, 47181, 47198, 49314, 53133, 55273, 55792, 59559, 59754, 60924, 61292, 61763, 61933, 66408, 68302
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
118 is in the sequence because the 4-th power of 118 is 193877776 and 1*9*3*8*7*7*7*7*6 = 3111696 = 42^4.
|
|
MATHEMATICA
|
Do[a = Apply[Times, IntegerDigits[n^2]]; If[ a != 0 && IntegerQ[a^(1/2)], Print[n]], {n, 1, 10^4} ]
|
|
CROSSREFS
|
Cf. A067071.
Sequence in context: A066923 A039556 A095627 this_sequence A146337 A165462 A165156
Adjacent sequences: A066731 A066732 A066733 this_sequence A066735 A066736 A066737
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 15 2002
|
|
|
Search completed in 0.002 seconds
|
