A344171 - OEIS

A344171

Decimal expansion of 12*sqrt(5).

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

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OFFSET

2,1

COMMENTS

Decimal expansion of the surface area of a rhombic triacontahedron with unit edge length.

LINKS

Table of n, a(n) for n=2..94.

Wikipedia, Rhombic triacontahedron

EXAMPLE

26.83281572999747635691008...

MATHEMATICA

RealDigits[12 Sqrt[5], 10, 100][[1]] // Flatten