A286286 - cp's OEIS frontend

A286286 a(0) = 0; thereafter, a(n) = (2n-1)a(n-1) + 1.

n	a(n)
0	0
1	1
2	4
3	21
4	148
5	1333
6	14664
7	190633
8	2859496
9	48611433
10	923617228
11	19395961789
12	446107121148
13	11152678028701
14	301122306774928
15	8732546896472913
16	270708953790660304
17	8933395475091790033
18	312668841628212651156
19	11568747140243868092773

[0, 1, 4, 21, 148, 1333, 14664, 190633, 2859496, 48611433, 923617228, 19395961789, 446107121148, 11152678028701, 301122306774928, 8732546896472913, 270708953790660304, 8933395475091790033, 312668841628212651156, 11568747140243868092773]

cp's OEIS Frontend

A286286 a(0) = 0; thereafter, a(n) = (2n-1)a(n-1) + 1.

Table of values

List of values

cp's OEIS Frontend

A286286 a(0) = 0; thereafter, a(n) = (2*n-1)*a(n-1) + 1.

Table of values

List of values

A286286 a(0) = 0; thereafter, a(n) = (2n-1)a(n-1) + 1.