A363679 Decimal expansion of the sum of the reciprocals of triangular polygorials A006472.

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

Offset: 1

Author

Kelvin Voskuijl, Aug 17 2023

Keywords

• nonn
• cons

Examples

			2.3948330992734047165226326364363731519686370070913624447267975638...
		

Crossrefs

Cf. A001113 (of factorials), A070910 (of factorials squared).

Cf. A365077 (continued fraction).

Cf. A006472.

Programs

Mathematica

RealDigits[BesselI[1, 2 Sqrt[2]]/Sqrt[2] 10, 120][[1]]

Formula

Equals BesselI(1, 2*sqrt(2))/sqrt(2).