A131423 - cp's OEIS frontend

A131423 a(n) = n(n+2)(2*n-1)/3. Also, row sums of triangle A131422.

n	a(n)
1	1
2	8
3	25
4	56
5	105
6	176
7	273
8	400
9	561
10	760
11	1001
12	1288
13	1625
14	2016
15	2465
16	2976
17	3553
18	4200
19	4921
20	5720
21	6601
22	7568
23	8625
24	9776
25	11025
26	12376
27	13833
28	15400
29	17081
30	18880
31	20801
32	22848
33	25025
34	27336
35	29785
36	32376
37	35113
38	38000
39	41041
40	44240
41	47601
42	51128

[1, 8, 25, 56, 105, 176, 273, 400, 561, 760, 1001, 1288, 1625, 2016, 2465, 2976, 3553, 4200, 4921, 5720, 6601, 7568, 8625, 9776, 11025, 12376, 13833, 15400, 17081, 18880, 20801, 22848, 25025, 27336, 29785, 32376, 35113, 38000, 41041, 44240, 47601, 51128]

cp's OEIS Frontend

A131423 a(n) = n(n+2)(2*n-1)/3. Also, row sums of triangle A131422.

Table of values

List of values

cp's OEIS Frontend

A131423 a(n) = n*(n+2)*(2*n-1)/3. Also, row sums of triangle A131422.

Table of values

List of values

A131423 a(n) = n(n+2)(2*n-1)/3. Also, row sums of triangle A131422.