A022874 - cp's OEIS frontend

A022874 a(n) = [ a(n-1)/a(1) ] + [ a(n-1)/a(2) ] + ... + [ a(n-1)/a(n-1) ] for n >= 3, with initial terms 2,1.

n	a(n)
1	2
2	1
3	1
4	2
5	6
6	19
7	60
8	194
9	628
10	2035
11	6597
12	21393
13	69382
14	225031
15	729865
16	2367255
17	7678002
18	24902998
19	80770936
20	261974262
21	849693202
22	2755914018
23	8938593456
24	28991634898
25	94032120191
26	304985891949
27	989198096368

[2, 1, 1, 2, 6, 19, 60, 194, 628, 2035, 6597, 21393, 69382, 225031, 729865, 2367255, 7678002, 24902998, 80770936, 261974262, 849693202, 2755914018, 8938593456, 28991634898, 94032120191, 304985891949, 989198096368]

cp's OEIS Frontend

A022874 a(n) = [ a(n-1)/a(1) ] + [ a(n-1)/a(2) ] + ... + [ a(n-1)/a(n-1) ] for n >= 3, with initial terms 2,1.

Table of values

List of values