A336094 - OEIS

%I #16 Aug 20 2020 21:00:41

%S 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 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 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 Digit of Pi multiplied by the next digit of Pi.

%C There are 37 different values that can appear in this sequence, the last of which does not appear until a(560) = 49.

%e The fifth digit of Pi is 5 and the sixth is 9, so a(5) = 45.

%t d = RealDigits[Pi, 10, 76][[1]]; Most[d] * Rest[d] (* _Amiram Eldar_, Jul 08 2020 *)

%Y Cf. A000796, A095916, A110883, A253828.

%K nonn,base,less,easy

%O 1,1

%A _J. Marcel Feenstra_, Jul 08 2020