OFFSET
1,3
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
MATHEMATICA
Array[FromDigits[Flatten[IntegerDigits/@Rest[Select[Divisors[#], OddQ]]]]&, 60] (* Harvey P. Dale, Mar 03 2014 *)
PROG
(Haskell)
a037284 n
| a209229 n == 1 = 0
| otherwise = read $ concat $ (map show) $ tail $ a182469_row n
-- Reinhard Zumkeller, May 01 2012
(Python)
from sympy import divisors
def a(n):
odd_divisors_gt1 = [d for d in divisors(n)[1:] if d%2 == 1]
if len(odd_divisors_gt1) == 0: return 0
else: return int("".join(str(d) for d in odd_divisors_gt1))
print([a(n) for n in range(1, 52)]) # Michael S. Branicky, Dec 31 2020
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
EXTENSIONS
a(36) corrected by Reinhard Zumkeller, May 01 2012
STATUS
approved