OFFSET
1,1
COMMENTS
All terms are even.
FORMULA
a(n) = 2 * A032822(n).
MATHEMATICA
Flatten@ Array[FromDigits /@ Tuples[{2, 8}, #] &, 5] (* Michael De Vlieger, Apr 06 2017 *)
PROG
(Magma) [n: n in [1..100000] | Set(IntegerToSequence(n, 10)) subset {2, 8}]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Apr 05 2017
STATUS
approved