login
4th powers written backwards.
2

%I #26 Oct 14 2023 22:32:45

%S 1,61,18,652,526,6921,1042,6904,1656,1,14641,63702,16582,61483,52605,

%T 63556,12538,679401,123031,61,184491,652432,148972,677133,526093,

%U 679654,144135,656416,182707,18,125329,6758401,1295811,6336331,5260051,6169761

%N 4th powers written backwards.

%H T. D. Noe, <a href="/A002108/b002108.txt">Table of n, a(n) for n = 1..1000</a>

%F From _Michel Marcus_, Jun 04 2019: (Start)

%F a(n) = A004086(A000583(n)).

%F a(n) = A002942(n^2). (End)

%F a(n * 10^k) = a(n) for k >= 1. - _Bernard Schott_, Jun 04 2019

%t FromDigits[Reverse[IntegerDigits[#]]]&/@(Range[40]^4) (* _Harvey P. Dale_, May 03 2012 *)

%o (PARI) a(n) = fromdigits(Vecrev(digits(n^4))); \\ _Michel Marcus_, Jun 04 2019

%Y Cf. A004086, A000583, A002942, A004165.

%Y {This sequence} Intersection A000583 = A186080 (palindromes).

%K nonn,base

%O 1,2

%A _N. J. A. Sloane_