A160262 a(n)=c-th digit of A000796(n) where c=n-th composite.

1, 9, 6, 5, 3, 8, 7, 9, 3, 3, 4, 6, 2, 4, 3, 3, 8, 3, 7, 5, 0, 2, 8, 8, 1, 9, 7, 6, 3, 9, 9, 7, 5, 1, 0, 5, 2, 0, 9, 7, 4, 4, 5, 9, 2, 3, 0, 8, 1, 6, 0, 2, 8, 6, 2, 0, 9, 9, 8, 2, 8, 0, 3, 4, 2, 5, 3, 4, 2, 1, 1, 0, 6, 7, 8, 1, 4, 8, 8, 5, 1, 3, 8, 2, 3, 0, 6, 6, 4, 7, 0, 9, 3, 8, 4, 6, 0, 9, 5, 0, 5, 8, 2, 3, 7, 2, 5, 3, 5, 9, 4, 0, 8, 2, 4, 8, 1, 1, 1, 4

Offset

1,2

Comments

A000796 is the decimal expansion of Pi.

Links

Table of n, a(n) for n=1..120.

Mathematica

With[{nn=200}, {p=RealDigits[Pi, 10, nn][[1]]}, {cmp=Select[Range[nn], CompositeQ]}, Table[p[[n]], {n, cmp}]] (* Harvey P. Dale, Nov 25 2025 *)

Crossrefs

Cf. A000796, A002808, A090201.

Sequence in context: A225406 A347330 A389422 * A343947 A367709 A381651

Adjacent sequences: A160259 A160260 A160261 * A160263 A160264 A160265

Keyword

nonn,base

Author

Vladislav-Stepan Malakhovsky and Juri-Stepan Gerasimov, May 07 2009

Extensions

Corrected and extended by Harvey P. Dale, Nov 25 2025

Status

approved