A025264 - cp's OEIS frontend

A025264 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 4, starting 2,1,1.

n	a(n)
1	2
2	1
3	1
4	5
5	22
6	99
7	450
8	2067
9	9586
10	44852
11	211570
12	1005427
13	4810460
14	23157904
15	112110906
16	545524287
17	2666864340
18	13092764136
19	64527778938
20	319157531592
21	1583724160896
22	7882364163954
23	39339994155288
24	196843821874407
25	987272738842392

[2, 1, 1, 5, 22, 99, 450, 2067, 9586, 44852, 211570, 1005427, 4810460, 23157904, 112110906, 545524287, 2666864340, 13092764136, 64527778938, 319157531592, 1583724160896, 7882364163954, 39339994155288, 196843821874407, 987272738842392]

cp's OEIS Frontend

A025264 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 4, starting 2,1,1.

Table of values

List of values

cp's OEIS Frontend

A025264 a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 4, starting 2,1,1.

Table of values

List of values

A025264 a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-1)*a(1) for n >= 4, starting 2,1,1.