OFFSET
1,16
LINKS
Robert Israel, Table of n, a(n) for n = 1..6126
MAPLE
f:= proc(n) local k, m;
m:= floor((n-1)/3);
add(binomial(m, 5*k/6)*binomial(n-m, k/6), k=6..m*6/5, 6);
end proc:
map(f, [$1..100]); # Robert Israel, Jul 23 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved