A301973 - cp's OEIS frontend

A301973 a(n) = (n^2 - 3n + 6)binomial(n+2,3)/4.

n	a(n)
0	0
1	1
2	4
3	15
4	50
5	140
6	336
7	714
8	1380
9	2475
10	4180
11	6721
12	10374
13	15470
14	22400
15	31620
16	43656
17	59109
18	78660
19	103075
20	133210
21	170016
22	214544
23	267950
24	331500
25	406575
26	494676
27	597429
28	716590
29	854050
30	1011840
31	1192136
32	1397264
33	1629705
34	1892100
35	2187255
36	2518146
37	2887924
38	3299920
39	3757650
40	4264820

[0, 1, 4, 15, 50, 140, 336, 714, 1380, 2475, 4180, 6721, 10374, 15470, 22400, 31620, 43656, 59109, 78660, 103075, 133210, 170016, 214544, 267950, 331500, 406575, 494676, 597429, 716590, 854050, 1011840, 1192136, 1397264, 1629705, 1892100, 2187255, 2518146, 2887924, 3299920, 3757650, 4264820]

cp's OEIS Frontend

A301973 a(n) = (n^2 - 3n + 6)binomial(n+2,3)/4.

Table of values

List of values

cp's OEIS Frontend

A301973 a(n) = (n^2 - 3*n + 6)*binomial(n+2,3)/4.

Table of values

List of values

A301973 a(n) = (n^2 - 3n + 6)binomial(n+2,3)/4.