|
Search: id:A113404
|
|
|
| A113404 |
|
Record gaps between prime quadruplets. |
|
+0
2
|
|
| 6, 90, 630, 660, 1170, 2190, 3780, 6420, 8940, 9030, 13260, 16470, 24150, 28800, 29610, 39990, 56580, 56910, 71610, 83460, 94530, 114450, 157830
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
EXAMPLE
|
The first prime quadruplets are 5,7,11,13 and 11,13,17,19 so a(0)=11-5=6. The following quadruplet is 101,103,107,109 so a(1)=101-11=90. The following quadruplet is 191,193,197,199 so 90 remains the record and no terms are added.
|
|
CROSSREFS
|
The smallest primes originating the sequence are given in A113403. Cf. A007530.
Sequence in context: A100297 A166782 A121249 this_sequence A121607 A100594 A002432
Adjacent sequences: A113401 A113402 A113403 this_sequence A113405 A113406 A113407
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Bernardo Boncompagni (redgolpe(AT)redgolpe.com), Oct 28 2005
|
|
|
Search completed in 0.002 seconds
|
