A291599 First 6-digit number to appear n times in the decimal expansion of Pi.

314159, 949129, 266830, 178653, 872117, 872117, 872117, 919441, 919441, 735287, 820737, 420516, 802307, 556505, 267638, 107072, 899801, 899801, 885110, 490270, 735880, 735880, 635517, 635517, 635517, 635517, 635517, 694904, 635517, 635517, 694904, 694904, 694904

Offset

1,1

Comments

The first 2 appearances of a(2) = 949129 both end at the beginning of a block of 100 digits of Pi after the decimal point. The 5th block of 100 digits of Pi after the decimal point ends with 94912, and the 6th block of 100 digits starts with 9. The 13th block of 100 digits of Pi after the decimal point ends with 94912, and the 14th block of 100 digits starts with 9.

Links

Michael S. Branicky, Table of n, a(n) for n = 1..1171 (all terms arising from first 10^9 digits of Pi)

Example

a(2) = 949129 because 949129 is the first 6-digit number to appear 2 times in the decimal expansion of Pi.

Crossrefs

Cf. A000796, A096567, A276686, A276992, A276993, A277171, A291600.

Sequence in context: A234121 A250152 A104826 * A092014 A250501 A234656

Adjacent sequences: A291596 A291597 A291598 * A291600 A291601 A291602

Keyword

nonn,base

Author

Bobby Jacobs, Aug 27 2017

Extensions

a(11)-a(16) added by Alois P. Heinz, Aug 28 2017

a(17) and onward from Michael S. Branicky, May 13 2026

Status

approved