A321475 - cp's OEIS frontend

A321475 Zeroless factorials (version 2): a(0) = 1, and for any n > 0, a(n) = noz(1 * noz(2 * ... * noz((n-1) * n))), where noz(n) = A004719(n) omits the zeros from n.

n	a(n)
0	1
1	1
2	2
3	6
4	24
5	12
6	72
7	54
8	432
9	3888
10	3888
11	399168
12	576
13	82728
14	879912
15	2397168
16	337968
17	5924736
18	8851949568
19	143936352
20	31644
21	92589264
22	118459638
23	3698784
24	1197539136
25	2387625984
26	954864
27	236271168
28	3573339984
29	238453776
30	69587928
31	142275168
32	33566976

[1, 1, 2, 6, 24, 12, 72, 54, 432, 3888, 3888, 399168, 576, 82728, 879912, 2397168, 337968, 5924736, 8851949568, 143936352, 31644, 92589264, 118459638, 3698784, 1197539136, 2387625984, 954864, 236271168, 3573339984, 238453776, 69587928, 142275168, 33566976]

cp's OEIS Frontend

A321475 Zeroless factorials (version 2): a(0) = 1, and for any n > 0, a(n) = noz(1 * noz(2 * ... * noz((n-1) * n))), where noz(n) = A004719(n) omits the zeros from n.

Table of values

List of values