A303224 - cp's OEIS frontend

A303224 a(0)=0, a(1)=1; for n>1, a(n) = na(n-1) - 3a(n-2).

n	a(n)
0	0
1	1
2	2
3	3
4	6
5	21
6	108
7	693
8	5220
9	44901
10	433350
11	4632147
12	54285714
13	691817841
14	9522592632
15	140763435957
16	2223647197416
17	37379712048201
18	666163875275370
19	12544974494087427
20	248900998255922430
21	5189286039892108749
22	113417589882858625188
23	2593036709186072053077
24	61892628250817153398284

[0, 1, 2, 3, 6, 21, 108, 693, 5220, 44901, 433350, 4632147, 54285714, 691817841, 9522592632, 140763435957, 2223647197416, 37379712048201, 666163875275370, 12544974494087427, 248900998255922430, 5189286039892108749, 113417589882858625188, 2593036709186072053077, 61892628250817153398284]

cp's OEIS Frontend

A303224 a(0)=0, a(1)=1; for n>1, a(n) = na(n-1) - 3a(n-2).

Table of values

List of values

cp's OEIS Frontend

A303224 a(0)=0, a(1)=1; for n>1, a(n) = n*a(n-1) - 3*a(n-2).

Table of values

List of values

A303224 a(0)=0, a(1)=1; for n>1, a(n) = na(n-1) - 3a(n-2).