A019778 Decimal expansion of sqrt(e)/5.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Examples

			0.32974425414002562936973015756283271433075522014202...
		

Links

• Ivan Panchenko, Table of n, a(n) for n = 0..1000
• Index entries for transcendental numbers

Crossrefs

Cf. A019774.

Programs

Mathematica

RealDigits[Sqrt[E]/5,10,120][[1]] (* Harvey P. Dale, Aug 25 2019 *)

Formula

Equals 0.1 * 2*sqrt(e) = 0.1 * Sum_{k>=0} (2*k+1)/(2^k * k!). - Amiram Eldar, Aug 07 2020