OFFSET
1,1
COMMENTS
Elements in this sequence can themselves be 8-almost primes, as happens often for 5-almost primes. a(1) = 256 = 2^8. Also an 8-Brilliant number. a(2) = 640 = 2^7 * 5. Also an 8-Brilliant number. Does this happen infinitely often? - Jonathan Vos Post, Dec 11 2004
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
a(2)=640 because sum of first two 8-almost primes i.e. 256+384 is 640.
MATHEMATICA
Accumulate[Select[Range[10000], Total[FactorInteger[#][[;; , 2]]]==8&]] (* Harvey P. Dale, Nov 02 2024 *)
CROSSREFS
KEYWORD
easy,nonn,changed
AUTHOR
Shyam Sunder Gupta, Aug 24 2003
STATUS
approved