A104747 - cp's OEIS frontend

A104747 a(n) = (n-3)2^n + n(n+3)/2 + 3.

n	a(n)
1	1
2	4
3	12
4	33
5	87
6	222
7	550
8	1327
9	3129
10	7236
11	16464
12	36957
13	82027
14	180346
15	393354
16	852123
17	1835181
18	3932352
19	8388820
20	17826025
21	37748991
22	79692054
23	167772462
24	352321863
25	738197857
26	1543504252
27	3221225880
28	6710886837

[1, 4, 12, 33, 87, 222, 550, 1327, 3129, 7236, 16464, 36957, 82027, 180346, 393354, 852123, 1835181, 3932352, 8388820, 17826025, 37748991, 79692054, 167772462, 352321863, 738197857, 1543504252, 3221225880, 6710886837]

cp's OEIS Frontend

A104747 a(n) = (n-3)2^n + n(n+3)/2 + 3.

Table of values

List of values

cp's OEIS Frontend

A104747 a(n) = (n-3)*2^n + n*(n+3)/2 + 3.

Table of values

List of values

A104747 a(n) = (n-3)2^n + n(n+3)/2 + 3.