A346191 Decimal expansion of Sum_{k>=0} 1/(2^(2^(2*k)) - 1).

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

Offset

1,3

Comments

This constant is transcendental (Schwarz, 1967).

Links

Table of n, a(n) for n=1..100.

Wolfgang Schwarz, Remarks on the irrationality and transcendence of certain series, Mathematica Scandinavica, Vol. 20, No. 2 (1967), pp. 269-274; alternative link.

Index entries for transcendental numbers

Formula

Equals A076214 - A346190.

Example

1.12503051757812500010842021724855044340074528008699...

Mathematica

RealDigits[Sum[1/(2^(2^(2*n) - 1)), {n, 0, 10}], 10, 100][[1]]

Crossrefs

Cf. A048649, A076214, A346190, A346192.

Sequence in context: A127863 A006891 A054675 * A136209 A212248 A208476

Adjacent sequences: A346188 A346189 A346190 * A346192 A346193 A346194

Keyword

nonn,cons

Author

Amiram Eldar, Jul 09 2021

Status

approved