OFFSET
1,2
COMMENTS
Always an even number. Aside from the first term, appears to always have a last digit of 2, 4, 6 or 8. n for M3, M6, M10 and M13 are represented here, while n for M19, M21, M22 are too large for this list.
CROSSREFS
KEYWORD
nonn
AUTHOR
J. W. Helkenberg, Feb 21 2015
STATUS
approved