A336808 - cp's OEIS frontend

A336808 a(n) = (n!)^2 * Sum_{k=0..n} 5^(n-k) / (k!)^2.

n	a(n)
0	1
1	6
2	121
3	5446
4	435681
5	54460126
6	9802822681
7	2401691556846
8	768541298190721
9	311259225767242006
10	155629612883621003001
11	94155915794590706815606
12	67792259372105308907236321
13	57284459169428986026614691246
14	56138769986040406306082397421081
15	63156116234295457094342697098716126

[1, 6, 121, 5446, 435681, 54460126, 9802822681, 2401691556846, 768541298190721, 311259225767242006, 155629612883621003001, 94155915794590706815606, 67792259372105308907236321, 57284459169428986026614691246, 56138769986040406306082397421081, 63156116234295457094342697098716126]

cp's OEIS Frontend

A336808 a(n) = (n!)^2 * Sum_{k=0..n} 5^(n-k) / (k!)^2.

Table of values

List of values