A308646 - cp's OEIS frontend

A308646 a(n) = exp(1) * Sum_{k>=0} (-1)^kk^(2n)/k!.

n	a(n)
0	1
1	0
2	1
3	-9
4	50
5	413
6	-17731
7	110176
8	9938669
9	-278475061
10	-9816860358
11	725503033401
12	15823587507881
13	-2848115497132448
14	-38795579403211671
15	17235101634895315375
16	153440975825762815938
17	-156894403296377741177371
18	-1454252568471818731501051
19	2071137586315785548669378432

[1, 0, 1, -9, 50, 413, -17731, 110176, 9938669, -278475061, -9816860358, 725503033401, 15823587507881, -2848115497132448, -38795579403211671, 17235101634895315375, 153440975825762815938, -156894403296377741177371, -1454252568471818731501051, 2071137586315785548669378432]

cp's OEIS Frontend

A308646 a(n) = exp(1) * Sum_{k>=0} (-1)^kk^(2n)/k!.

Table of values

List of values

cp's OEIS Frontend

A308646 a(n) = exp(1) * Sum_{k>=0} (-1)^k*k^(2*n)/k!.

Table of values

List of values

A308646 a(n) = exp(1) * Sum_{k>=0} (-1)^kk^(2n)/k!.