OFFSET

1,1

COMMENTS

From Zak Seidov, Sep 21 2018: (Start)

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)

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

Zak Seidov, Aug 05 2018

STATUS

approved