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 A309578 #20 Dec 09 2024 19:46:39
%S A309578 1,3,8,48,144,329,2584,15456,104005,832040,1866294,34111385,267914296,
%T A309578 1602508992,10783446409,193501094490,1548008755920,3472236254411,
%U A309578 166151337293088,498454011879264,1118049290473933,53500214605455696,360008399296352015,2460986135945634432
%N A309578 Multiplicative inverse of Fibonacci(prime(n)) modulo Fibonacci(prime(n+1)).
%C A309578 Since Fibonacci numbers have the property that gcd(x,y) = gcd(Fibonacci(x), Fibonacci(y)), the modular inverse will always exist for this sequence.
%F A309578 a(n) = invmod(Fibonacci(prime(n)), Fibonacci(prime(n+1))).
%p A309578 a:= n-> (f-> (1/f(n) mod f(n+1)))(j->combinat[fibonacci](ithprime(j))):
%p A309578 seq(a(n), n=1..25); # _Alois P. Heinz_, Aug 12 2019
%t A309578 Table[ModularInverse[Fibonacci[Prime[n]], Fibonacci[Prime[n+1]]], {n, 20}]
%o A309578 (PARI) a(n)={lift(1/(Mod(fibonacci(prime(n)), fibonacci(prime(n+1)))))} \\ _Andrew Howroyd_, Aug 12 2019
%Y A309578 Cf. A000045, A030426, A069830.
%K A309578 nonn
%O A309578 1,2
%A A309578 _Dragos Ristache_, Aug 08 2019