A093468 - cp's OEIS frontend

A093468 a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum {a(n)-a(i), i = 1 to n}.

n	a(n)
1	1
2	2
3	3
4	6
5	18
6	78
7	438
8	2958
9	23118
10	204558
11	2018958
12	21977358
13	261478158
14	3374988558
15	46964134158
16	700801318158
17	11162196262158
18	189005910310158
19	3390192763174158
20	64212742967590158
21	1280663747055910158

[1, 2, 3, 6, 18, 78, 438, 2958, 23118, 204558, 2018958, 21977358, 261478158, 3374988558, 46964134158, 700801318158, 11162196262158, 189005910310158, 3390192763174158, 64212742967590158, 1280663747055910158]

cp's OEIS Frontend

A093468 a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum {a(n)-a(i), i = 1 to n}.

Table of values

List of values