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A054278 Positions of 2's in the decimal expansion of exp(1). 2
1, 5, 9, 17, 23, 31, 34, 41, 63, 66, 88, 93, 99, 102, 112, 120, 132, 139, 146, 149, 163, 165, 168, 179, 183, 194, 217, 239, 253, 254, 274, 280, 298, 307, 317, 334, 342, 347, 359, 366, 372, 383, 392, 403, 411, 427 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Flatten[Position[RealDigits[E, 10, 1000][[1]], 2]] (* Vincenzo Librandi, Oct 07 2013 *)

CROSSREFS

Cf. A001113.

Sequence in context: A005006 A276194 A157970 * A210978 A211434 A182388

Adjacent sequences:  A054275 A054276 A054277 * A054279 A054280 A054281

KEYWORD

nonn,base

AUTHOR

Simon Plouffe, Feb 20 2000

STATUS

approved

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Last modified October 23 12:19 EDT 2019. Contains 328345 sequences. (Running on oeis4.)