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 A261598 #18 Feb 16 2025 08:33:26
%S A261598 0,1,1,2,3,5,8,13,21,34,55,29,48,159,102,100,432,962,172,369,2340,156,
%T A261598 2420,14763,29952,25000,18447,67716,22848,63800,21420,217854,2250,
%U A261598 35264,34944,99330,14364,1300500,0,8726016,2303910,544272,9728000,5615610,8419950
%N A261598 Product of sexagesimal digits of Fibonacci numbers in base-60 representation.
%C A261598 a(n) is the product of the terms in the n-th row of table A261575.
%C A261598 Conjecture: a(n) = 0 for n > 3329 (empirically checked up to 36000).
%H A261598 Reinhard Zumkeller, <a href="/A261598/b261598.txt">Table of n, a(n) for n = 0..10000</a>
%H A261598 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Sexagesimal.html">Sexagesimal</a>
%H A261598 Wikipedia, <a href="http://www.wikipedia.org/wiki/Sexagesimal">Sexagesimal</a>
%p A261598 a:= n-> mul(i, i=convert((<<0|1>, <1|1>>^n)[1, 2], base, 60)):
%p A261598 seq(a(n), n=0..44); # _Alois P. Heinz_, Jan 22 2022
%t A261598 Apply[Times, IntegerDigits[Fibonacci[Range[0, 50]], 60], {1}] (* _Paolo Xausa_, Feb 19 2024 *)
%o A261598 (Haskell)
%o A261598 a261598 = product . a261575_row
%o A261598 (PARI) a(n) = if (n, vecprod(digits(fibonacci(n), 60)), 0); \\ _Michel Marcus_, Jan 22 2022
%Y A261598 Cf. A261575, A000045, A246558, A261587.
%K A261598 nonn,look,base
%O A261598 0,4
%A A261598 _Reinhard Zumkeller_, Sep 09 2015