OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Total/@Partition[Select[Range[100], CompositeQ], 4, 1], CompositeQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 21 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Claudio Meller, Jun 15 2009
EXTENSIONS
Definition clarified by Harvey P. Dale, Apr 21 2020
STATUS
approved