A354833 - cp's OEIS frontend

A354833 a(1)=1; for n > 1, a(n) = a(n-1) - n unless that result is already in the sequence or would be negative; otherwise, a(n) = a(n-1) * n.

n	a(n)
1	1
2	2
3	6
4	24
5	19
6	13
7	91
8	83
9	74
10	64
11	53
12	41
13	28
14	14
15	210
16	194
17	177
18	159
19	140
20	120
21	99
22	77
23	54
24	30
25	5
26	130
27	103
28	75
29	46
30	16
31	496
32	464
33	431
34	397
35	362
36	326
37	289
38	251
39	212
40	172
41	131
42	89
43	3827
44	3783
45	3738
46	3692
47	3645
48	3597
49	3548
50	3498
51	3447
52	3395
53	3342
54	3288
55	3233
56	3177

[1, 2, 6, 24, 19, 13, 91, 83, 74, 64, 53, 41, 28, 14, 210, 194, 177, 159, 140, 120, 99, 77, 54, 30, 5, 130, 103, 75, 46, 16, 496, 464, 431, 397, 362, 326, 289, 251, 212, 172, 131, 89, 3827, 3783, 3738, 3692, 3645, 3597, 3548, 3498, 3447, 3395, 3342, 3288, 3233, 3177]

cp's OEIS Frontend

A354833 a(1)=1; for n > 1, a(n) = a(n-1) - n unless that result is already in the sequence or would be negative; otherwise, a(n) = a(n-1) * n.

Table of values

List of values