OFFSET
1,2
PROG
(Haskell)
a252079 n = a252079_list !! (n-1)
a252079_list = [x | x <- [1..], a252022 x == x]
(Python)
A252079_list, l, s, b = [1], [1], 2, set()
for n in range(2, 10**5):
i = s
while True:
if i not in b:
li = [int(d) for d in str(i)[::-1]]
for x, y in zip(li, l):
if x+y > 9:
break
else:
l = li
b.add(i)
if i == n:
A252079_list.append(i)
while s in b:
b.remove(s)
s += 1
break
i += 1 # Chai Wah Wu, Dec 14 2014
CROSSREFS
KEYWORD
nonn,more,changed
AUTHOR
Reinhard Zumkeller, Dec 13 2014
EXTENSIONS
a(16)-a(20) from Chai Wah Wu, Dec 14 2014
STATUS
approved