A105274 - OEIS

A105274

Peaks in digital expansions of Pi: digits which are larger than their neighbors.

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

FORMULA

d[i]>d[i+1]&&d[i]>d[i-1]

MATHEMATICA

Select[Partition[RealDigits[Pi, 10, 500][[1]], 3, 1], #[[1]]<#[[2]]>#[[3]]&][[All, 2]] (* Harvey P. Dale, Dec 03 2022 *)

CROSSREFS

Sequence in context: A362213 A094243 A155875 * A264264 A089390 A053667

Adjacent sequences: A105271 A105272 A105273 * A105275 A105276 A105277

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Apr 25 2005

STATUS

approved