OFFSET
1,2
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = A024620(n) - 1.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Erich Friedman.
Name clarified by Ilya Gutkovskiy, Mar 12 2020
STATUS
approved