A078718 - cp's OEIS frontend

A078718 a(n) = (-1)^n(2n - 1)*CatalanNumber(n - 2) for n >= 2, a(n) = n for n = 0, 1.

n	a(n)
0	0
1	1
2	3
3	-5
4	14
5	-45
6	154
7	-546
8	1980
9	-7293
10	27170
11	-102102
12	386308
13	-1469650
14	5616324
15	-21544100
16	82907640
17	-319929885
18	1237518450
19	-4796857230
20	18627909300
21	-72457790790
22	282257178060
23	-1100982015900
24	4299680491080
25	-16809921068850
26	65785111513524
27	-257683159276956

[0, 1, 3, -5, 14, -45, 154, -546, 1980, -7293, 27170, -102102, 386308, -1469650, 5616324, -21544100, 82907640, -319929885, 1237518450, -4796857230, 18627909300, -72457790790, 282257178060, -1100982015900, 4299680491080, -16809921068850, 65785111513524, -257683159276956]

cp's OEIS Frontend

A078718 a(n) = (-1)^n(2n - 1)*CatalanNumber(n - 2) for n >= 2, a(n) = n for n = 0, 1.

Table of values

List of values

cp's OEIS Frontend

A078718 a(n) = (-1)^n*(2*n - 1)*CatalanNumber(n - 2) for n >= 2, a(n) = n for n = 0, 1.

Table of values

List of values

A078718 a(n) = (-1)^n(2n - 1)*CatalanNumber(n - 2) for n >= 2, a(n) = n for n = 0, 1.