A014974 Differences between successive locations of zeros in decimal expansion of Pi.

18, 4, 11, 6, 6, 8, 12, 9, 10, 5, 7, 4, 14, 13, 5, 3, 9, 19, 12, 38, 3, 16, 6, 17, 4, 16, 1, 3, 16, 3, 10, 17, 3, 1, 5, 3, 6, 23, 5, 5, 13, 22, 8, 42, 20, 7, 3, 20, 2, 7, 5, 4, 35, 5, 1, 1, 15, 20, 19, 2, 10, 13, 2, 19, 12, 5

Offset: 1

Author

Bagirath R. Krishnamachari (bagi(AT)callisto.miel.mot.com)

Keywords

• nonn
• base

Comments

Assuming Pi is normal, this sequence includes every finite sequence of positive integers. - Franklin T. Adams-Watters, Mar 15 2006

Examples

			First two 0's are in 33rd and 51st digits, difference is 18.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..3000
• Eric Weisstein's World of Mathematics, Normal Number.

Crossrefs

Cf. A000796, A037008, A139728, A108664.

Programs

Mathematica

Differences[Flatten[Position[RealDigits[Pi,10,1000][[1]],0]]] (* Harvey P. Dale, Jul 04 2017 *)

Formula

a(n) = A014976(n+1) - A014976(n). - Michel Marcus, Oct 06 2013

Extensions

More terms from Simon Plouffe.