A379443 Decimal expansion of the smallest positive root of the Cosine Integral function.

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

Offset

0,1

References

Jerome Spanier and Keith B. Oldham, "Atlas of Functions", Hemisphere Publishing Corp., 1987, chapter 38, page 365.

Links

Table of n, a(n) for n=0..104.

Eric Weisstein's World of Mathematics, Cosine Integral.

Example

0.61650548562071623379711040410017274753949589818...

Mathematica

x0 = x /. FindRoot[ CosIntegral[x], {x, 1}, WorkingPrecision -> 110]; RealDigits[x0][[1]][[1 ;; 105]]

Crossrefs

Cf. A133746.

Sequence in context: A221210 A010492 A276515 * A144544 A070514 A377124

Adjacent sequences: A379440 A379441 A379442 * A379444 A379445 A379446

Keyword

nonn,cons

Author

Stefano Spezia, Jan 04 2025

Status

approved