A384627 Decimal expansion of 1/998001.

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

Offset: 0

Author

Paolo Xausa, Jun 05 2025

Keywords

• nonn
• cons
• easy

Comments

The decimals of this constant contain every 3-digit number, from 000 to 999, in order, except for 998.

Periodic with period 2997.

Examples

			0.0000010020030040050060070080090100110120130140150160170...
		

Links

• Paolo Xausa, Table of n, a(n) for n = 0..10000
• Brady Haran and James Grime, 998,001 and its Mysterious Recurring Decimals, YouTube Numberphile video, 2012.

Crossrefs

Cf. A021085, A034948.

Programs

Mathematica

First[RealDigits[1/999^2, 10, 100, -1]]

Formula

Equals 1/(999^2).