OFFSET
1,1
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
R. P. Boas & N. J. A. Sloane, Correspondence, 1974
FORMULA
a(n) = A089241(n)-1.
MATHEMATICA
2*Prime[Range[60]]+1 (* Harvey P. Dale, Mar 31 2011 *)
PROG
(Haskell)
a072055 = (+ 1) . (* 2) . a000040 -- Reinhard Zumkeller, Oct 10 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jun 11 2002
STATUS
approved