|
| |
|
|
A141278
|
|
Clusters of consecutive composites in A141089.
|
|
0
|
|
|
|
25, 26, 48, 49, 114, 115, 123, 124, 212, 213, 287, 288, 332, 333, 342, 343, 398, 399, 415, 416, 440, 441, 446, 447, 470, 471, 488, 489, 510, 511, 512, 548, 549, 553, 554, 603, 604, 638, 639, 640, 648, 649, 675, 676, 771, 772, 785, 786, 818, 819, 836, 837
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
A141089 contains composites A002808(k) such that the partial sum A053767(k) divides the partial product A036691(k). The sequence contains the subsequences of A141089 that contain two or more consecutive integers.
|
|
|
LINKS
|
Table of n, a(n) for n=1..52.
|
|
|
FORMULA
|
Numbers A141089(i) such that either 1+A141089(i) = A141089(i+1) or A141089(i)-1 = A141089(i-1) or both.
|
|
|
EXAMPLE
|
The first pair of consecutive integers is (25,26) in A141089(6,7), the second (48,49) in A141089(9,10).
Triples of consecutive integers in A141089 are (510,511,512), (638,639,640), (889,890,891), (912,913,914), quadruples are (987,988,989,990), etc, all members included here.
|
|
|
CROSSREFS
|
Cf. A141089 A141090 A141091 A141092 A141274 A141275.
Sequence in context: A195331 A175426 A045567 * A022395 A042260 A042262
Adjacent sequences: A141275 A141276 A141277 * A141279 A141280 A141281
|
|
|
KEYWORD
|
easy,nonn
|
|
|
AUTHOR
|
Enoch Haga, Jun 21 2008
|
|
|
EXTENSIONS
|
Edited by R. J. Mathar, Jul 08 2008
|
|
|
STATUS
|
approved
|
| |
|
|
