A340837 - cp's OEIS frontend

A340837 a(n) = (1/2) * Sum_{k>=0} (k*(k - 1))^n / 2^k.

n	a(n)
0	1
1	2
2	52
3	3272
4	382672
5	71819552
6	19755648832
7	7489898916992
8	3743721038908672
9	2385494267756237312
10	1887436919680269939712
11	1815491288416066631616512
12	2086364959404184854563049472
13	2823211429546048668686123343872
14	4443155724532239407325655263035392

[1, 2, 52, 3272, 382672, 71819552, 19755648832, 7489898916992, 3743721038908672, 2385494267756237312, 1887436919680269939712, 1815491288416066631616512, 2086364959404184854563049472, 2823211429546048668686123343872, 4443155724532239407325655263035392]

cp's OEIS Frontend

A340837 a(n) = (1/2) * Sum_{k>=0} (k*(k - 1))^n / 2^k.

Table of values

List of values