A330479 Decimal expansion of 2*e^2-2 (or 2*(e^2-1)).

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

Offset: 2

Author

Eder Vanzei, Dec 15 2019

Keywords

• easy
• cons
• nonn

Comments

Solution of the equation W(x+W(x+W(...))) = 2, where W(x) is the Lambert W function.

2*e^2-2 is a transcendental number.

Examples

			12.7781121978613004544608549211500156263606311411036946481742556450...
		

Links

• Index entries for transcendental numbers

Crossrefs

Cf. A001113, A072334.

Programs

Mathematica

RealDigits[2*(E^2-1), 10, 105][[1]] (* Amiram Eldar, Dec 19 2019 *)

Formula

Equals 2*(A072334 - 1).