OFFSET
3,1
LINKS
FORMULA
a(n) = Sum_{k=1..4} A271711(n,k).
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Arkadiusz Wesolowski, Apr 12 2016
EXTENSIONS
a(6)-a(10) were found in 2013 and 2014 by Lee Morgenstern
STATUS
approved