A322764 - cp's OEIS frontend

A322764 Number of set partitions of the multiset consisting of one copy each of x_1, x_2, ..., x_n, and 2 copies each of y_1 and y_2.

n	a(n)
0	9
1	26
2	92
3	371
4	1663
5	8155
6	43263
7	246218
8	1493344
9	9600683
10	65133513
11	464538351
12	3471671717
13	27109690422
14	220646396816
15	1867649896679
16	16408260807503
17	149357276866099
18	1406334890073883
19	13677748330883790
20	137221985081833892

[9, 26, 92, 371, 1663, 8155, 43263, 246218, 1493344, 9600683, 65133513, 464538351, 3471671717, 27109690422, 220646396816, 1867649896679, 16408260807503, 149357276866099, 1406334890073883, 13677748330883790, 137221985081833892]

cp's OEIS Frontend

A322764 Number of set partitions of the multiset consisting of one copy each of x_1, x_2, ..., x_n, and 2 copies each of y_1 and y_2.

Table of values

List of values