A144662 - cp's OEIS frontend

A144662 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} (i+j+k+l)!/(4!i!j!k!l!).

n	a(n)
0	0
1	1
2	266
3	45296
4	7958726
5	1495388159
6	295887993624
7	60790021361170
8	12845435390707724
9	2774049143394729653
10	609542744597785306189
11	135840016223787254538508
12	30629983532857972983331740
13	6975352854342057056747327899
14	1602003695575764851150428242804
15	370631496919828403109950449644134

[0, 1, 266, 45296, 7958726, 1495388159, 295887993624, 60790021361170, 12845435390707724, 2774049143394729653, 609542744597785306189, 135840016223787254538508, 30629983532857972983331740, 6975352854342057056747327899, 1602003695575764851150428242804, 370631496919828403109950449644134]

cp's OEIS Frontend

A144662 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} (i+j+k+l)!/(4!i!j!k!l!).

Table of values

List of values

cp's OEIS Frontend

A144662 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} (i+j+k+l)!/(4!*i!*j!*k!*l!).

Table of values

List of values

A144662 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} (i+j+k+l)!/(4!i!j!k!l!).