login
A128827
Perfect powers beginning and ending with the same digit.
1
1, 4, 8, 9, 121, 343, 484, 676, 1331, 1521, 1681, 4624, 5625, 9409, 10201, 11881, 12321, 14161, 14641, 16641, 17161, 19321, 19881, 21952, 40804, 43264, 44944, 47524, 49284, 50625, 55225, 60516, 64516, 65536, 69696, 79507, 91809, 94249
OFFSET
1,2
EXAMPLE
97^2 = 9409 is a term; 43^3 = 79507 is a term.
PROG
(Magma) PP:=[1] cat [ n: n in [2..100000] | IsPower(n) ]; [ n: n in PP | k[1] eq k[ #k] where k is Intseq(n, 10) ]; // Klaus Brockhaus, Apr 16 2007
CROSSREFS
Cf. A001597 (perfect powers), A075786 (palindromic perfect powers), A129450.
Sequence in context: A327654 A110811 A226035 * A075786 A348429 A046450
KEYWORD
nonn,base
AUTHOR
J. M. Bergot, Apr 12 2007
EXTENSIONS
Edited, corrected and extended by Klaus Brockhaus, Apr 16 2007
STATUS
approved