A028244 - cp's OEIS frontend

A028244 a(n) = 4^(n-1) - 33^(n-1) + 32^(n-1) - 1 (essentially Stirling numbers of second kind).

n	a(n)
1	0
2	0
3	0
4	6
5	60
6	390
7	2100
8	10206
9	46620
10	204630
11	874500
12	3669006
13	15195180
14	62350470
15	254135700
16	1030793406
17	4166023740
18	16792841910
19	67558001700
20	271392695406
21	1089054420300
22	4366671742950
23	17498055448500
24	70086339807006

[0, 0, 0, 6, 60, 390, 2100, 10206, 46620, 204630, 874500, 3669006, 15195180, 62350470, 254135700, 1030793406, 4166023740, 16792841910, 67558001700, 271392695406, 1089054420300, 4366671742950, 17498055448500, 70086339807006]

cp's OEIS Frontend

A028244 a(n) = 4^(n-1) - 33^(n-1) + 32^(n-1) - 1 (essentially Stirling numbers of second kind).

Table of values

List of values

cp's OEIS Frontend

A028244 a(n) = 4^(n-1) - 3*3^(n-1) + 3*2^(n-1) - 1 (essentially Stirling numbers of second kind).

Table of values

List of values

A028244 a(n) = 4^(n-1) - 33^(n-1) + 32^(n-1) - 1 (essentially Stirling numbers of second kind).