A086045 Position of second occurrence of n in concatenated numbers (A033307, Champernowne constant).

12, 11, 16, 18, 20, 22, 24, 26, 28, 30, 191, 14, 15, 54, 74, 94, 114, 134, 154, 174, 252, 33, 36, 37, 76, 96, 116, 136, 156, 176, 282, 53, 55, 58, 59, 98, 118, 138, 158, 178, 312, 73, 75, 77, 80, 81, 120, 140, 160, 180, 342, 93, 95, 97, 99, 102, 103, 142

Offset: 0

Author

Reinhard Zumkeller, Jul 07 2003

Keywords

• nonn
• base

Comments

A033307(a(n)) = A000030(n); a(n)>A086044(n);

A033307(a(n)+i) = A033307(A086044(n)+i), 0<=i < A055642(n).

Links

• Paul Tek, Table of n, a(n) for n = 0..10000

Programs

Mathematica

Join[{12},Module[{nn=350,cno},cno=Flatten[IntegerDigits/@Range[nn]];Table[ SequencePosition[ cno,IntegerDigits[n],2][[2,1]],{n,60}]]+1] (* Harvey P. Dale, Dec 09 2022 *)