A358989 Decimal expansion of 13*sqrt(146)/50.

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

Offset: 1

Author

Jack Zhang, Dec 09 2022

Keywords

• nonn
• cons

Comments

An approximation for Pi by C. G. Specht and Helen A. Merrill.

Examples

			3.1415919531345887377535382093700424815595822543413056179176564284220845325277...
		

References

• Helen A. Merrill, Mathematical Excursions, Boston, Bruce Humphries, Inc., 1933.

Links

• Herman C. Schepler, The Chronology of PI, Mathematics Magazine, Vol. 23, No. 5 (May - Jun., 1950), pp. 279-283.
• C. G. Specht, Annäherungs-Construction des Kreis-Umfangs und Flächen-Inhalts, Journal für die reine und angewandte Mathematik, Vol. 3 (1828), p. 83.

Crossrefs

Cf. A000796 (Pi).

Programs

Mathematica

RealDigits[13*Sqrt[146]/50, 10, 120][[1]] (* Amiram Eldar, Dec 09 2022 *)