A381643 - cp's OEIS frontend

A381643 a(n) = 4^n - (n+6)3^(n-1) + (n+2)2^(n-1).

n	a(n)
0	0
1	0
2	0
3	3
4	34
5	245
6	1436
7	7483
8	36198
9	166545
10	739792
11	3203783
12	13617242
13	57072925
14	236680068
15	973578003
16	3979881166
17	16191039785
18	65622734264
19	265197899743
20	1069304363970
21	4303927449525
22	17299346486380
23	69458798306603
24	278650899449654

[0, 0, 0, 3, 34, 245, 1436, 7483, 36198, 166545, 739792, 3203783, 13617242, 57072925, 236680068, 973578003, 3979881166, 16191039785, 65622734264, 265197899743, 1069304363970, 4303927449525, 17299346486380, 69458798306603, 278650899449654]

cp's OEIS Frontend

A381643 a(n) = 4^n - (n+6)3^(n-1) + (n+2)2^(n-1).

Table of values

List of values

cp's OEIS Frontend

A381643 a(n) = 4^n - (n+6)*3^(n-1) + (n+2)*2^(n-1).

Table of values

List of values

A381643 a(n) = 4^n - (n+6)3^(n-1) + (n+2)2^(n-1).