OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..300
FORMULA
a(n) = A270953(n,n-floor((1+sqrt(max(0,8*n-7)))/2)).
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 26 2016
STATUS
approved