|
Search: id:A109592
|
|
|
| A109592 |
|
Sequence and first differences include all even numbers exactly once and no odd numbers. |
|
+0
1
|
|
| 2, 6, 14, 24, 36, 52, 70, 90, 112, 138, 166, 196, 228, 262, 300, 340, 382, 426, 472, 520, 570, 624, 680, 738, 798, 860, 924, 990, 1058, 1130, 1204, 1280, 1358, 1438, 1520, 1604, 1690, 1778, 1870, 1964, 2060, 2158, 2258, 2360, 2464, 2570, 2678, 2788, 2902
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
First differences = 2*A030124.
|
|
REFERENCES
|
E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.
|
|
FORMULA
|
a(n) = 2*A005228(n).
|
|
CROSSREFS
|
Cf. A005228, A030124.
Sequence in context: A016060 A032386 A074329 this_sequence A106353 A002703 A112853
Adjacent sequences: A109589 A109590 A109591 this_sequence A109593 A109594 A109595
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Eric Angelini (eric.angelini(AT)kntv.be), Aug 30 2005
|
|
EXTENSIONS
|
Edited, corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 06 2005
|
|
|
Search completed in 0.002 seconds
|
