OFFSET
1,1
COMMENTS
a(n) = n + A020639(n+1).
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
PROG
(Haskell)
a087349 n = a020639 (n + 1) + n -- Reinhard Zumkeller, Mar 31 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 20 2003
STATUS
approved