A281092 Position of the first occurrence of n in the decimal expansion of e.

13, 2, 0, 17, 10, 11, 20, 1, 3, 12, 195, 200, 370, 27, 223, 201, 94, 88, 2, 108, 111, 87, 252, 16, 33, 92, 30, 0, 4, 131, 71, 189, 110, 142, 143, 17, 19, 270, 85, 106, 66, 124, 97, 134, 239, 10, 103, 25, 228, 34, 235, 93, 15, 18, 76, 301, 153, 38, 325, 11, 20, 242, 32

Offset: 0

Author

Bobby Jacobs, Jan 21 2017

Keywords

• base
• nonn

Comments

The 2 before the decimal point is counted as position 0.

This differs from A078197(n) at n = 2, 27, 271, 2718, ... .

Crossrefs

Cf. A001113, A051238, A078197, A088576, A176341.

Programs

Mathematica

With[{ed=RealDigits[E,10,500][[1]]},Flatten[Table[SequencePosition[ ed, IntegerDigits[n],1][[All,1]],{n,0,65}]]]-1 (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 06 2017 *)