A229197 Beginning position of n in the decimal expansion of log(10).

3, 21, 1, 2, 13, 5, 17, 22, 6, 9, 41, 40, 322, 368, 25, 266, 154, 21, 398, 103, 35, 236, 112, 1, 79, 4, 70, 60, 48, 10, 2, 190, 59, 57, 101, 77, 32, 178, 700, 197, 13, 102, 34, 31, 253, 15, 28, 251, 44, 277, 7

Offset: 0

Author

Eric W. Weisstein, Sep 15 2013

Keywords

• nonn
• base
• less

Links

• Eric W. Weisstein, Table of n, a(n) for n = 0..999
• Eric Weisstein's World of Mathematics, Constant Digit Scanning
• Eric Weisstein's World of Mathematics, Natural Logarithm of 10 Digits

Crossrefs

Cf. A002392 (decimal expansion of log(10)).

Programs

Mathematica

Module[{d=RealDigits[Log[10],10,1000][[1]]}, Table[SequencePosition[ d, IntegerDigits[ n],1][[All,1]],{n,0,50}]]//Flatten (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 28 2019 *)