A110938 Decimal expansion of (cosecant of 1 degree)^2.

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

Offset

4,1

References

Mohammad K. Azarian, Forty-Five Nested Equilateral Triangles and cosecant of 1 degree, Problem 813, College Mathematics Journal, Vol. 36, No. 5, November 2005, p. 413-414. Solution published in Vol. 37, No. 5, November 2006, pp. 394-395.

Links

Table of n, a(n) for n=4..108.

Example

3283.139703653887079290656368932964699...

Mathematica

RealDigits[Csc[Pi/180]^2, 10, 100][[1]] (* Stefano Spezia, Dec 08 2025 *)

Crossrefs

Cf. A019810, A110937.

Sequence in context: A231981 A344577 A019666 * A135852 A389240 A191731

Adjacent sequences: A110935 A110936 A110937 * A110939 A110940 A110941

Keyword

nonn,cons

Author

Mohammad K. Azarian, Jan 21 2006

Status

approved