A320298 Differences between positions of 1's in binary expansion of Pi.

1, 3, 3, 5, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 4, 4, 5, 2, 1, 2, 4, 1, 5, 4, 1, 2, 3, 1, 4, 3, 1, 4, 1, 3, 1, 4, 2, 4, 2, 1, 1, 8, 1, 2, 1, 1, 6, 1, 1, 3, 1, 2, 4, 3, 2, 3, 7, 3, 3, 1, 1, 6, 4, 4, 2, 3, 1, 3, 1, 1, 1, 1, 3, 1, 4, 1, 1, 2, 9, 6, 2, 1, 1, 2, 1, 1, 1, 1, 2, 2, 3, 1, 4, 1, 1, 2, 1, 4, 3, 1, 1, 3, 1, 2, 1, 3, 4, 3, 2, 4, 2, 3, 2, 6, 5, 1, 1, 1, 3, 1, 4, 1, 1, 4, 1, 2, 8, 3, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 3, 2, 2, 4, 1, 3, 1, 2, 1, 3, 1, 1, 1, 3, 1, 2, 3, 1, 1, 2, 3, 5, 1, 4, 1, 2, 1, 3, 1, 7, 2, 2, 1, 5, 2, 3, 1, 2, 1, 2, 1, 1, 1, 1, 3

Offset

1,2

Links

Table of n, a(n) for n=1..186.

Formula

a(n) = A004711(n+1) - A004711(n) (A004711 is concerned with Pi/4, but they are essentially the same).

Mathematica

Differences@ Position[RealDigits[Pi, 2, 250][[1]], 1][[All, 1]] (* Michael De Vlieger, Oct 20 2018 *)

Crossrefs

Cf. A004711, A320299.

Sequence in context: A246005 A103786 A067462 * A021753 A353412 A062563

Adjacent sequences: A320295 A320296 A320297 * A320299 A320300 A320301

Keyword

nonn,base

Author

Jack Zhang, Oct 10 2018

Status

approved