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 A380840 #14 Mar 31 2025 13:40:01
%S A380840 1,1,4,7,5,2,9,0,9,7,7,5,8,5,8,0,0,4,6,9,3,3,2,8,3,8,0,6,2,8,2,1,3,0,
%T A380840 4,0,1,6,4,4,7,6,4,7,3,5,5,2,5,1,1,2,2,5,5,2,7,5,8,2,4,1,2,3,9,5,0,5,
%U A380840 3,3,5,9,0,4,5,5,0,4,5,4,3,1,4,7,2,6,5,2,2,8,7,3,7,2,6,9,0,9,4,6,7,5,1,6,8,0
%N A380840 Decimal expansion of Sum_{p prime} 1/(p-1)^3.
%H A380840 Artur Jasinski, <a href="/A380840/a380840.txt">Complete list of the 117 convergent cases of Sum_{primes p} 1/((p-1)^m p^n (p+1)^r) for exponents -3 <= n,m,r <= 3</a>
%H A380840 <a href="/wiki/Index_to_constants#Start_of_section_P">Index to constants which are prime zeta sums</a> {0,3,0}
%e A380840 1.1475290977585800469332838..,
%o A380840 (PARI) sumeulerrat(1/(p-1)^3)
%Y A380840 Cf. A085541, A086242, A085548, A136141, A152441, A154945, A179119, A369632, A324833.
%K A380840 nonn
%O A380840 1,3
%A A380840 _Artur Jasinski_, Mar 19 2025