OFFSET
0,1
REFERENCES
GCHQ, The GCHQ Puzzle Book, Penguin, 2016. See pages 49, 79, and 214.
FORMULA
a(n) = n + A005589(n)
CROSSREFS
KEYWORD
nonn,word
AUTHOR
Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 13 2004
STATUS
approved