A335091 - cp's OEIS frontend

A335091 a(n) = ((2n+1)!!)^3 (Sum_{k=1..n} 1/(2*k+1)^3).

n	a(n)
0	0
1	1
2	152
3	55511
4	41625144
5	56246975289
6	124697847089808
7	423322997436687375
8	2088114588247920714000
9	14363296872939657999716625
10	133299155158711610547152961000
11	1624450039177408057102079622846375
12	25413656551949715361011431877529125000
13	500711137690193661025654228810320074015625

[0, 1, 152, 55511, 41625144, 56246975289, 124697847089808, 423322997436687375, 2088114588247920714000, 14363296872939657999716625, 133299155158711610547152961000, 1624450039177408057102079622846375, 25413656551949715361011431877529125000, 500711137690193661025654228810320074015625]

cp's OEIS Frontend

A335091 a(n) = ((2n+1)!!)^3 (Sum_{k=1..n} 1/(2*k+1)^3).

Table of values

List of values

cp's OEIS Frontend

A335091 a(n) = ((2*n+1)!!)^3 * (Sum_{k=1..n} 1/(2*k+1)^3).

Table of values

List of values

A335091 a(n) = ((2n+1)!!)^3 (Sum_{k=1..n} 1/(2*k+1)^3).