A379276 Decimal expansion of 2^(5^0.4) - 0.6 - ((0.3^9)/7)^(0.8^0.1).

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

Offset

1,1

Comments

By rewriting the expression without the zeros, i.e., 2^(5^.4) - .6 - ((.3^9)/7)^(.8^.1), we obtain a pandigital expression that is an approximation to Pi accurate to 11 digits.

This formula was found by B. Ziv in 2004.

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Brady Haran and James Grime, Incredible Formula, Numberphile YouTube video, 2016.

Eric Weisstein's World of Mathematics, Pi Approximations.

Index entries for sequences related to the number Pi

Example

3.141592653590453113110325108074900848476743334...

Mathematica

First[RealDigits[2^5^(4/10) - 6/10 - ((3/10)^9/7)^(8/10)^(1/10), 10, 100]]

Crossrefs

Cf. A000796, A221185.

Sequence in context: A000796 A212131 A379323 * A379321 A114609 A271452

Adjacent sequences: A379273 A379274 A379275 * A379277 A379278 A379279

Keyword

nonn,cons,easy

Author

Paolo Xausa, Dec 19 2024

Status

approved