OFFSET
1,5
REFERENCES
See A113827.
EXAMPLE
The least 10-tuple is {199, 409, 619, 829, 1039, 1249, 1459, 1669, 1879, 2089}, which explains a(4)=1 (and a(n)=0 for n<4).
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Jean-Marc Rebert, Jun 04 2016
STATUS
approved