OFFSET
2,1
COMMENTS
LINKS
Donovan Johnson, Table of n, a(n) for n = 2..200
EXAMPLE
a(7)=191 because in (191, 192, 193) we have Omega(192)=Omega(2*2*2*2*2*2*3)=7 and 191, 193 are twin primes.
The sequence oscillates and here we see that a(7)<a(6)=239.
MATHEMATICA
Omega = If[ # == 1, 0, Apply[Plus, Transpose[FactorInteger[ # ]][[2]]]] &; Wmil = Map[Omega, Range[1, 10000000]]; Aseq=(Flatten@Position[Partition[Wmil, 3, 1], {1, #, 1}])[[1]] & /@ Range[3, 19]
CROSSREFS
KEYWORD
nonn
AUTHOR
Carlos Alves, Aug 12 2009
EXTENSIONS
Definition and comments corrected, a(2) and a(20)-a(29) from Donovan Johnson, Aug 20 2009
STATUS
approved