|
|
A067750
|
|
Numbers k whose last digit is the k-th digit of Pi.
|
|
2
|
|
|
1, 18, 43, 47, 50, 78, 79, 88, 102, 104, 112, 123, 129, 169, 199, 225, 226, 228, 249, 254, 259, 270, 276, 281, 283, 286, 292, 302, 313, 315, 318, 325, 330, 340, 345, 355, 360, 381, 384, 399, 407, 415, 426, 436, 454, 459, 462, 464, 471, 503, 515, 516, 520
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Let d(n) be the n-th digit of Pi=3.14159... so d(1)=1, d(2)=4 etc. d(123)=3 and 3 is the last digit of 123 hence 123 is in the sequence.
|
|
LINKS
|
|
|
MATHEMATICA
|
With[{pids=Rest[RealDigits[Pi, 10, 610][[1]]]}, Transpose[Select[Table[ {n, First[Take[pids, {n, n}]]}, {n, 600}], Mod[First[#], 10]==Last[#]&]][[1]]] (* Harvey P. Dale, Sep 15 2011 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|