OFFSET
1,2
COMMENTS
Note that Jagy omitted 19.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
W. C. Jagy, Problem 11539, Amer. Math. Monthly, 119 (2012), 884-885.
PROG
(Haskell)
a220432 n = a220432_list !! (n-1)
a220432_list = filter (\x -> null $
intersect (a027748_row x) (takeWhile (<= x) a219908_list)) a007310_list
-- Reinhard Zumkeller, Dec 15 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 15 2012
EXTENSIONS
Data fixed and extended by Reinhard Zumkeller, Dec 15 2012
STATUS
approved