A353908 Decimal expansion of Pi^2/36.

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

Offset

0,1

Comments

Ratio of volume between the stepped pyramid with an infinite number of levels described in A245092 and the circumscribed cube (see the first formula).

See also Vaclav Kotesovec's formula (2016) in A175254.

Links

Table of n, a(n) for n=0..105.

Index entries for transcendental numbers

Formula

Equals lim_{n->infinity} A175254(n)/n^3.

Equals A002388/36.

Equals A102753/18.

Equals A195055/12.

Equals A091476/9.

Equals A013661/6.

Equals A100044/4.

Equals A072691/3.

Equals A086463/2.

Equals A086729*2.

Equals A019673^2.

Equals A002388*A021040.

Example

0.2741556778080377394120691944410041982031583168677997396225930382283345784...

Maple

evalf(Pi^2/36, 121);  # Alois P. Heinz, May 11 2022

Mathematica

RealDigits[Pi^2/36, 10, 100][[1]] (* Amiram Eldar, May 11 2022 *)

Prog

(PARI) Pi^2/36
(PARI) zeta(2)/6

Crossrefs

Cf. A000203, A000796, A002388, A013661, A019673, A021040, A024916, A072691, A086463, A086729, A091476, A100044, A102753, A175254, A195055, A237271, A237593, A245092.

Sequence in context: A016592 A371876 A051558 * A144805 A198745 A200111

Adjacent sequences: A353905 A353906 A353907 * A353909 A353910 A353911

Keyword

nonn,cons

Author

Omar E. Pol, May 10 2022

Status

approved