A371826 - cp's OEIS frontend

A371826 a(n) = Sum_{k=0..floor(n/2)} n^k * binomial(2n-k,n-2k).

n	a(n)
0	1
1	2
2	8
3	35
4	170
5	872
6	4740
7	26994
8	161006
9	1001009
10	6476976
11	43480373
12	302250196
13	2170406149
14	16070240276
15	122453910495
16	958755921686
17	7701233828576
18	63381318474768
19	533793776053926
20	4595440308780620
21	40400161269188412
22	362367733795887848

[1, 2, 8, 35, 170, 872, 4740, 26994, 161006, 1001009, 6476976, 43480373, 302250196, 2170406149, 16070240276, 122453910495, 958755921686, 7701233828576, 63381318474768, 533793776053926, 4595440308780620, 40400161269188412, 362367733795887848]

cp's OEIS Frontend

A371826 a(n) = Sum_{k=0..floor(n/2)} n^k * binomial(2n-k,n-2k).

Table of values

List of values

cp's OEIS Frontend

A371826 a(n) = Sum_{k=0..floor(n/2)} n^k * binomial(2*n-k,n-2*k).

Table of values

List of values

A371826 a(n) = Sum_{k=0..floor(n/2)} n^k * binomial(2n-k,n-2k).