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A336094
Digit of Pi multiplied by the next digit of Pi.
0
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, 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, 40, 16, 0, 0, 63, 28, 36, 36, 16, 20, 45, 18, 6, 0, 0, 56, 8, 6, 24, 0, 0, 12, 16, 48
OFFSET
1,1
COMMENTS
There are 37 different values that can appear in this sequence, the last of which does not appear until a(560) = 49.
EXAMPLE
The fifth digit of Pi is 5 and the sixth is 9, so a(5) = 45.
MATHEMATICA
d = RealDigits[Pi, 10, 76][[1]]; Most[d] * Rest[d] (* Amiram Eldar, Jul 08 2020 *)
CROSSREFS
KEYWORD
nonn,base,less,easy
AUTHOR
J. Marcel Feenstra, Jul 08 2020
STATUS
approved