A144661 - cp's OEIS frontend

A144661 a(n) = Sum_{i=0..n} Sum_{j=0..n} Sum_{k=0..n} Sum_{l=0..n} (i+j+k+l)!/(i!j!k!*l!).

n	a(n)
0	1
1	65
2	7365
3	1107697
4	191448941
5	35899051101
6	7101534312685
7	1458965717496881
8	308290573348183629
9	66577182435768923245
10	14629025943480502591445
11	3260160391173522631759533
12	735119604833362632050789701
13	167408468505328518543519208949
14	38448088693846486556578015883325

[1, 65, 7365, 1107697, 191448941, 35899051101, 7101534312685, 1458965717496881, 308290573348183629, 66577182435768923245, 14629025943480502591445, 3260160391173522631759533, 735119604833362632050789701, 167408468505328518543519208949, 38448088693846486556578015883325]

cp's OEIS Frontend

A144661 a(n) = Sum_{i=0..n} Sum_{j=0..n} Sum_{k=0..n} Sum_{l=0..n} (i+j+k+l)!/(i!j!k!*l!).

Table of values

List of values

cp's OEIS Frontend

A144661 a(n) = Sum_{i=0..n} Sum_{j=0..n} Sum_{k=0..n} Sum_{l=0..n} (i+j+k+l)!/(i!*j!*k!*l!).

Table of values

List of values

A144661 a(n) = Sum_{i=0..n} Sum_{j=0..n} Sum_{k=0..n} Sum_{l=0..n} (i+j+k+l)!/(i!j!k!*l!).