A055270 - cp's OEIS frontend

A055270 a(n) = 7a(n-1) + (-1)^n binomial(2,2-n) with a(-1)=0.

n	a(n)
0	1
1	5
2	36
3	252
4	1764
5	12348
6	86436
7	605052
8	4235364
9	29647548
10	207532836
11	1452729852
12	10169108964
13	71183762748
14	498286339236
15	3488004374652
16	24416030622564
17	170912214357948
18	1196385500505636
19	8374698503539452
20	58622889524776164
21	410360226673433148
22	2872521586714032036

[1, 5, 36, 252, 1764, 12348, 86436, 605052, 4235364, 29647548, 207532836, 1452729852, 10169108964, 71183762748, 498286339236, 3488004374652, 24416030622564, 170912214357948, 1196385500505636, 8374698503539452, 58622889524776164, 410360226673433148, 2872521586714032036]

cp's OEIS Frontend

A055270 a(n) = 7a(n-1) + (-1)^n binomial(2,2-n) with a(-1)=0.

Table of values

List of values

cp's OEIS Frontend

A055270 a(n) = 7*a(n-1) + (-1)^n * binomial(2,2-n) with a(-1)=0.

Table of values

List of values

A055270 a(n) = 7a(n-1) + (-1)^n binomial(2,2-n) with a(-1)=0.