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.
%I A050816 #8 Oct 17 2019 22:34:44
%S A050816 0,1,5,75025,514229,165580141,7778742049,2504730781961,17167680177565,
%T A050816 259695496911122585,1779979416004714189,573147844013817084101,
%U A050816 59425114757512643212875125,898923707008479989274290850145
%N A050816 Fibonacci(k) ending with digits of its index number k.
%t A050816 fQ[n_]:=Module[{idni=IntegerDigits[First[n]],indf=IntegerDigits[Last[n]]}, idni== Take[indf,-Length[idni]]]; Transpose[Select[Table[ {n, Fibonacci[n]}, {n,0,150}],fQ]][[2]] (* _Harvey P. Dale_, Apr 21 2011 *)
%Y A050816 Cf. A000045, A000350, A038546, A052000.
%K A050816 nonn,base
%O A050816 0,3
%A A050816 _Patrick De Geest_, Oct 15 1999