A092429 - cp's OEIS frontend

A092429 a(n) = n! * Sum_{i,j,k,l >= 0, i+j+k+l = n} 1/(i!j!k!*l!).

n	a(n)
0	1
1	1
2	3
3	10
4	47
5	126
6	522
7	1821
8	8143
9	26326
10	109958
11	396111
12	1737122
13	5998955
14	24949277
15	91979985
16	397402223
17	1418993350
18	5881338702
19	22010456331
20	94022106862
21	342803313261
22	1416758002487
23	5356198979731
24	22685035586290
25	83911052895151
26	345921828889367

[1, 1, 3, 10, 47, 126, 522, 1821, 8143, 26326, 109958, 396111, 1737122, 5998955, 24949277, 91979985, 397402223, 1418993350, 5881338702, 22010456331, 94022106862, 342803313261, 1416758002487, 5356198979731, 22685035586290, 83911052895151, 345921828889367]

cp's OEIS Frontend

A092429 a(n) = n! * Sum_{i,j,k,l >= 0, i+j+k+l = n} 1/(i!j!k!*l!).

Table of values

List of values

cp's OEIS Frontend

A092429 a(n) = n! * Sum_{i,j,k,l >= 0, i+j+k+l = n} 1/(i!*j!*k!*l!).

Table of values

List of values

A092429 a(n) = n! * Sum_{i,j,k,l >= 0, i+j+k+l = n} 1/(i!j!k!*l!).