A037000 Positions of the digit '1' in the decimal expansion of Pi.

1, 3, 37, 40, 49, 68, 94, 95, 103, 110, 138, 148, 153, 154, 155, 163, 168, 174, 175, 198, 206, 220, 238, 243, 246, 250, 269, 281, 295, 297, 314, 319, 324, 342, 344, 362, 363, 381, 385, 390, 393, 395, 396, 417, 424, 427, 428, 432, 437, 438, 442, 445, 446

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10137

Eric Weisstein's World of Mathematics, Pi Digits

Formula

Conjecturally, a(n) ~ 10n.

Maple

P:= convert(evalf[100000](Pi), string)[3..-1]:
select(t -> P[t]="1", [$1..length(P)-1]); # Robert Israel, Dec 22 2013

Mathematica

Flatten @ Position[ RealDigits[Pi - 3, 10, 500][[1]], 1] (* Robert G. Wilson v, Mar 07 2011 *)

Crossrefs

Cf. A036974.

Sequence in context: A128061 A176240 A116184 * A042333 A106103 A224471

Adjacent sequences: A036997 A036998 A036999 * A037001 A037002 A037003

Keyword

base,nonn

Author

Nicolau C. Saldanha (nicolau(AT)mat.puc-rio.br)

Status

approved