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 A336094 #16 Aug 20 2020 21:00:41 %S A336094 3,4,4,5,45,18,12,30,15,15,40,72,63,63,27,6,6,24,32,24,12,12,24,12,9, %T A336094 24,24,6,14,63,45,0,0,16,64,32,4,9,63,7,6,54,27,27,81,27,21,35,5,0,0, %U A336094 40,16,0,0,63,28,36,36,16,20,45,18,6,0,0,56,8,6,24,0,0,12,16,48 %N A336094 Digit of Pi multiplied by the next digit of Pi. %C A336094 There are 37 different values that can appear in this sequence, the last of which does not appear until a(560) = 49. %e A336094 The fifth digit of Pi is 5 and the sixth is 9, so a(5) = 45. %t A336094 d = RealDigits[Pi, 10, 76][[1]]; Most[d] * Rest[d] (* _Amiram Eldar_, Jul 08 2020 *) %Y A336094 Cf. A000796, A095916, A110883, A253828. %K A336094 nonn,base,less,easy %O A336094 1,1 %A A336094 _J. Marcel Feenstra_, Jul 08 2020