A352469 - cp's OEIS frontend

A352469 a(0) = 1; a(n) = (1/n) * Sum_{k=0..floor((n-1)/2)} binomial(n,2k+1)^3 (2k+1) a(n-2*k-1).

n	a(n)
0	1
1	1
2	4
3	37
4	640
5	18401
6	810616
7	51506645
8	4512303104
9	526359723265
10	79484297525704
11	15182084413118525
12	3598056798827450752
13	1040872295660542894433
14	362422517793599461361216
15	150047916077302216370174237
16	73081847594180657956494147584
17	41481744863993143666887680079873

[1, 1, 4, 37, 640, 18401, 810616, 51506645, 4512303104, 526359723265, 79484297525704, 15182084413118525, 3598056798827450752, 1040872295660542894433, 362422517793599461361216, 150047916077302216370174237, 73081847594180657956494147584, 41481744863993143666887680079873]

cp's OEIS Frontend

A352469 a(0) = 1; a(n) = (1/n) * Sum_{k=0..floor((n-1)/2)} binomial(n,2k+1)^3 (2k+1) a(n-2*k-1).

Table of values

List of values

cp's OEIS Frontend

A352469 a(0) = 1; a(n) = (1/n) * Sum_{k=0..floor((n-1)/2)} binomial(n,2*k+1)^3 * (2*k+1) * a(n-2*k-1).

Table of values

List of values

A352469 a(0) = 1; a(n) = (1/n) * Sum_{k=0..floor((n-1)/2)} binomial(n,2k+1)^3 (2k+1) a(n-2*k-1).