A053689 Positions where 3 occurs in decimal expansion of e (starting count at decimal point).

17, 19, 28, 45, 71, 73, 75, 85, 106, 110, 114, 126, 135, 142, 143, 155, 158, 161, 163, 171, 177, 179, 180, 189, 204, 206, 212, 227, 270, 274, 281, 287, 311, 319, 320, 322, 327, 338, 339, 353, 357, 364, 375, 383, 394, 404, 423, 433, 447, 482, 485, 491, 498

Offset

0,1

Links

Table of n, a(n) for n=0..52.

Carlos M. da Fonseca and Anthony G. Shannon, A formal operator involving Fermatian numbers, Notes Num. Theor. Disc. Math. (2024) Vol. 30, No. 3, 491-498.

Formula

a(n) = A054279(n) - 1.

Example

3 first occurs at the 17th position to the right of the decimal point.

Mathematica

Flatten[Position[Rest[RealDigits[E, 10, 600][[1]]], 3]] (* Harvey P. Dale, Jun 28 2011 *)

Crossrefs

Cf. A001113, A054279.

Sequence in context: A133347 A096990 A175384 * A176462 A060254 A190792

Adjacent sequences: A053686 A053687 A053688 * A053690 A053691 A053692

Keyword

easy,nonn,base

Author

Enoch Haga, Feb 16 2000

Status

approved