login
A067504
Powers of 7 with digit sum also a power of 7.
7
1, 7, 2401, 1977326743
OFFSET
1,2
COMMENTS
Next terms are 7^4433, 7^30810. - Sascha Kurz, Mar 18 2002
CROSSREFS
Subsequence of A000420.
Sequence in context: A013740 A209591 A060759 * A203382 A249352 A264743
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Feb 11 2002
STATUS
approved