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 A316352 #18 Jul 15 2018 13:49:40 %S A316352 2,7,7,9,8,0,6,0,7,9,1,5,0,3,5,6,9,1,3,9,0,2,9,6,2,1,8,4,5,5,3,1,2,0, %T A316352 1,4,6,7,6,0,7,3,3,6,5,5,0,9,6,0,4,4,1,9,3,3,3,3,6,6,5,5,5,2,4,3,1,2, %U A316352 6,9 %N A316352 Decimal expansion of (BesselI(0,1/2)-BesselI(1,1/2))/(BesselI(0,1/2)-3*BesselI(1,1/2)). %C A316352 The continued fraction of this number is the same as that of exp(1), except that a(3n) of the continued fraction of this number is the sequence of odd numbers, 2n+1, rather than the sequence of even numbers, 2n. %e A316352 2.77980607915035691390296218455... = 2 + 1/(1 + 1/(3 + 1/(1 + 1/(1 + 1/(5 + ...))))) %t A316352 RealDigits[(BesselI[0, 1/2] - BesselI[1, 1/2])/(BesselI[0, 1/2] - 3 BesselI[1, 1/2]), 10, 70][[1]] %o A316352 (PARI) (besseli(0, 1/2)-besseli(1, 1/2))/(besseli(0, 1/2)-3*besseli(1, 1/2)) \\ _Felix Fröhlich_, Jul 07 2018 %Y A316352 Cf. A001113, A003417, A058281, A101443, A298242. %K A316352 nonn,cons %O A316352 1,1 %A A316352 _Terry D. Grant_, Jun 29 2018