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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A117082 Octagonal numbers for which the sum of the digits is also a octagonal number. 0
0, 1, 8, 341, 1160, 4485, 6816, 9633, 12936, 16725, 20501, 25761, 30401, 36741, 42960, 64533, 81345, 90480, 131880, 143445, 168033, 181056, 208560, 238008, 253461, 269400, 302736, 338016, 375240, 414408, 434721, 455520, 520833, 590520 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

EXAMPLE

1160 is in the sequence because (1) it is a octagonal number and (2)the sum of its digits 1+1+6+0=8 is also a octagonal number.

CROSSREFS

Cf. A000567.

Sequence in context: A171248 A204069 A071306 * A061458 A135067 A002781

Adjacent sequences:  A117079 A117080 A117081 * A117083 A117084 A117085

KEYWORD

base,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 17 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 17 14:50 EST 2012. Contains 206050 sequences.