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

0,1

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

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 *)

Crossrefs

Sequence in context: A070560 A358497 A019330 * A072220 A171986 A254717

Adjacent sequences: A086042 A086043 A086044 * A086046 A086047 A086048

Keyword

nonn,base

Author

Reinhard Zumkeller, Jul 07 2003

Status

approved