|
Search: id:A081643
|
|
|
| A081643 |
|
Integers congruent to 0, 1, 4 or 9 (mod 16) which are not squares. |
|
+0
2
|
|
| 17, 20, 32, 33, 41, 48, 52, 57, 65, 68, 73, 80, 84, 89, 96, 97, 105, 112, 113, 116, 128, 129, 132, 137, 145, 148, 153, 160, 161, 164, 176, 177, 180, 185, 192, 193, 201, 208, 209, 212, 217, 224, 228, 233, 240, 241, 244, 249, 257, 260, 265, 272, 273, 276, 281
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
REFERENCES
|
Mark A. Herkommer, Number Theory, A Programmer's Guide, McGraw-Hill, New York, 1999, page 315.
|
|
MATHEMATICA
|
Select[ Range[287], (Mod[ #, 16] == 0 || Mod[ #, 16] == 1 || Mod[ #, 16] == 4 || Mod[ #, 16] == 9) && !IntegerQ[ Sqrt[ # ]] & ]
|
|
CROSSREFS
|
Sequence in context: A134539 A034069 A116037 this_sequence A146169 A045020 A069961
Adjacent sequences: A081640 A081641 A081642 this_sequence A081644 A081645 A081646
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 26 2003
|
|
|
Search completed in 0.003 seconds
|
