A173121 - cp's OEIS frontend

A173121 a(n) = sinh(2arccosh(n))^2 = 4n^2*(n^2 - 1).

n	a(n)
0	0
1	0
2	48
3	288
4	960
5	2400
6	5040
7	9408
8	16128
9	25920
10	39600
11	58080
12	82368
13	113568
14	152880
15	201600
16	261120
17	332928
18	418608
19	519840
20	638400
21	776160
22	935088
23	1117248
24	1324800
25	1560000
26	1825200
27	2122848
28	2455488
29	2825760
30	3236400
31	3690240

[0, 0, 48, 288, 960, 2400, 5040, 9408, 16128, 25920, 39600, 58080, 82368, 113568, 152880, 201600, 261120, 332928, 418608, 519840, 638400, 776160, 935088, 1117248, 1324800, 1560000, 1825200, 2122848, 2455488, 2825760, 3236400, 3690240]

cp's OEIS Frontend

A173121 a(n) = sinh(2arccosh(n))^2 = 4n^2*(n^2 - 1).

Table of values

List of values

cp's OEIS Frontend

A173121 a(n) = sinh(2*arccosh(n))^2 = 4*n^2*(n^2 - 1).

Table of values

List of values

A173121 a(n) = sinh(2arccosh(n))^2 = 4n^2*(n^2 - 1).