A355167 - cp's OEIS frontend

A355167 a(n) = exp(-1/4) * Sum_{k>=0} (4k + 3)^n / (4^k k!).

n	a(n)
0	1
1	4
2	20
3	128
4	1008
5	9280
6	96704
7	1120768
8	14274816
9	197833728
10	2958521344
11	47415508992
12	809838505984
13	14670950907904
14	280760761434112
15	5655835404271616
16	119561580162646016
17	2645030742360588288
18	61087848487323959296
19	1469652941137655103488
20	36758243982057508175872
21	954111239026567129595904

[1, 4, 20, 128, 1008, 9280, 96704, 1120768, 14274816, 197833728, 2958521344, 47415508992, 809838505984, 14670950907904, 280760761434112, 5655835404271616, 119561580162646016, 2645030742360588288, 61087848487323959296, 1469652941137655103488, 36758243982057508175872, 954111239026567129595904]

cp's OEIS Frontend

A355167 a(n) = exp(-1/4) * Sum_{k>=0} (4k + 3)^n / (4^k k!).

Table of values

List of values

cp's OEIS Frontend

A355167 a(n) = exp(-1/4) * Sum_{k>=0} (4*k + 3)^n / (4^k * k!).

Table of values

List of values

A355167 a(n) = exp(-1/4) * Sum_{k>=0} (4k + 3)^n / (4^k k!).