login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A064210 Numbers n such that sum of the digits of n is >= the sum of the digits of n^4. 2
1, 7, 10, 19, 67, 70, 100, 190, 670, 700, 1000, 1900, 6700, 7000, 10000, 19000, 67000, 70000, 100000, 124499, 190000, 670000, 700000, 1000000, 1244990, 1900000, 6700000, 7000000, 10000000, 12449900, 19000000, 67000000, 70000000, 100000000 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

If n is in the sequence, so is 10n. See A122484 for the subsequence of terms not ending in "0".  [Charles R Greathouse IV, Jan 12 2012]

MATHEMATICA

Select[ Range[ 10^7 ], Apply[ Plus, IntegerDigits[ # ]] >= Apply[ Plus, IntegerDigits[ #^4 ]] & ]

CROSSREFS

Sequence in context: A196939 A038211 A122226 * A097634 A120312 A074377

Adjacent sequences:  A064207 A064208 A064209 * A064211 A064212 A064213

KEYWORD

base,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 21 2001

EXTENSIONS

More terms from Martin Raab (raab-martin(AT)gmx.de), Aug 08 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 08:13 EST 2012. Contains 205893 sequences.