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

1,1

Links

Table of n, a(n) for n=1..120.

Formula

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

Example

2.3948330992734047165226326364363731519686370070913624447267975638...

Mathematica

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

Crossrefs

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

Cf. A365077 (continued fraction).

Cf. A006472.

Sequence in context: A222120 A242812 A374494 * A089206 A329568 A249824

Adjacent sequences: A363676 A363677 A363678 * A363680 A363681 A363682

Keyword

nonn,cons

Author

Kelvin Voskuijl, Aug 17 2023

Status

approved