cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A382082 F(k) such that F(k) + (F(k) reversed) is a palindrome, where F(k) is a Fibonacci number.

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%I A382082 #39 Mar 24 2025 13:01:57
%S A382082 0,1,2,3,13,21,34,144,233,610,4181,832040,102334155,1134903170,
%T A382082 20365011074,12200160415121876738
%N A382082 F(k) such that F(k) + (F(k) reversed) is a palindrome, where F(k) is a Fibonacci number.
%C A382082 Conjecture: The sequence appears to be finite.
%C A382082 The next term, F(k), has k > 3*10^5, if it exists. - _Amiram Eldar_, Mar 21 2025
%e A382082 144 is in the sequence because 144 + 441 = 585 is a palindrome.
%t A382082 DeleteDuplicates@ Select[Fibonacci[Range[0, 100]], PalindromeQ[# + IntegerReverse[#]] &] (* _Amiram Eldar_, Mar 21 2025 *)
%o A382082 (Magma) Rev := func<i | Seqint(Reverse(Intseq(i)))>;
%o A382082 [0] cat  [Fibonacci(n): n in [2..2*10^4] | q eq Rev(q) where q is Fibonacci(n)+Rev(Fibonacci(n))];
%Y A382082 Intersection of A000045 and A015976.
%Y A382082 Cf. A002113, A004086, A004091, A352124.
%K A382082 nonn,base
%O A382082 1,3
%A A382082 _Vincenzo Librandi_, Mar 21 2025