Search: a319504 -id:a319504
|
| |
|
|
A317743
|
|
Valleys in A064800: terms which are smaller than their neighbors.
|
|
+10
1
|
|
|
|
14, 18, 20, 27, 30, 32, 35, 38, 42, 44, 51, 54, 57, 59, 62, 67, 68, 72, 74, 80, 87, 90, 93, 98, 102, 104, 110, 114, 123, 128, 131, 132, 135, 138, 140, 143, 147, 150, 152, 158, 163, 164, 171, 174, 179, 182, 187, 192, 194, 198, 200
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
First second-order valley is a(514) = 516
with {521, 517, 516, 517, 520}.
First third-order valley is a(k=265827) = 265829
with {265833, 265831, 265830, 265829, 265831, 265832, 265834}.
Are there minima of higher order? (End)
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
|
|
|
MATHEMATICA
|
Transpose[ Select[ Partition[(# + PrimeOmega[#]) & /@ Range[201], 3, 1], #[[1]] > #[[2]] < #[[3]] &]][[2]] (* Giovanni Resta, Aug 09 2018 *)
|
|
|
PROG
|
(PARI) lista(nn) = {my(v = vector(nn, n, n + bigomega(n))); for (n=2, nn, if ((v[n] < v[n-1]) && (v[n] < v[n+1]), print1(v[n], ", ")); ); } \\ Michel Marcus, Sep 07 2018
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
Search completed in 0.008 seconds
|
