A382495 - cp's OEIS frontend

A382495 a(n) = Sum_{k=0..floor(n/2)} binomial(k+3,3) * binomial(2k,2n-4*k).

n	a(n)
0	1
1	0
2	4
3	4
4	10
5	60
6	30
7	300
8	335
9	1000
10	2506
11	3500
12	11879
13	17304
14	44220
15	88592
16	161865
17	385704
18	660964
19	1475100
20	2807956
21	5459860
22	11313094
23	20816004
24	42774780
25	80798128
26	157292750
27	307887904
28	579776799
29	1138007940
30	2146348214
31	4126143900
32	7878910238
33	14878269368

[1, 0, 4, 4, 10, 60, 30, 300, 335, 1000, 2506, 3500, 11879, 17304, 44220, 88592, 161865, 385704, 660964, 1475100, 2807956, 5459860, 11313094, 20816004, 42774780, 80798128, 157292750, 307887904, 579776799, 1138007940, 2146348214, 4126143900, 7878910238, 14878269368]

cp's OEIS Frontend

A382495 a(n) = Sum_{k=0..floor(n/2)} binomial(k+3,3) * binomial(2k,2n-4*k).

Table of values

List of values

cp's OEIS Frontend

A382495 a(n) = Sum_{k=0..floor(n/2)} binomial(k+3,3) * binomial(2*k,2*n-4*k).

Table of values

List of values

A382495 a(n) = Sum_{k=0..floor(n/2)} binomial(k+3,3) * binomial(2k,2n-4*k).