Yet another π formula
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11-06-2021, 06:28 PM
(This post was last modified: 11-07-2021 11:09 AM by Albert Chan.)
Post: #16
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RE: Yet another π formula
This pi formula is very similar to zeta(2) alternating sum formula
(11-05-2021 03:55 PM)Albert Chan Wrote:(10-31-2021 03:40 PM)Albert Chan Wrote: Let s = (-1)^n, x=n*n+n+1, T's = triangular number... Apply the same idea here, we have this for estimating PI Code: OPTION ARITHMETIC DECIMAL_HIGH p (pairs) = 100 Accurate digits = 308.79106444764398 p (pairs) = 101 Accurate digits = 311.85336518362854 p (pairs) = 300 Accurate digits = 921.2386113713281 p (pairs) = 301 Accurate digits = 924.30082763127136 For p=326, it reached 1000 digits full precision. |
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