A319867 - cp's OEIS frontend

A319867 a(n) = 321 + 654 + 987 + 121110 + ... + (up to the n-th term).

n	a(n)
1	3
2	6
3	6
4	12
5	36
6	126
7	135
8	198
9	630
10	642
11	762
12	1950
13	1965
14	2160
15	4680
16	4698
17	4986
18	9576
19	9597
20	9996
21	17556
22	17580
23	18108
24	29700
25	29727
26	30402
27	47250
28	47280
29	48120
30	71610
31	71643
32	72666
33	104346
34	104382
35	105606
36	147186
37	147225
38	148668
39	202020
40	202062
41	203742

[3, 6, 6, 12, 36, 126, 135, 198, 630, 642, 762, 1950, 1965, 2160, 4680, 4698, 4986, 9576, 9597, 9996, 17556, 17580, 18108, 29700, 29727, 30402, 47250, 47280, 48120, 71610, 71643, 72666, 104346, 104382, 105606, 147186, 147225, 148668, 202020, 202062, 203742]

cp's OEIS Frontend

A319867 a(n) = 321 + 654 + 987 + 121110 + ... + (up to the n-th term).

Table of values

List of values

cp's OEIS Frontend

A319867 a(n) = 3*2*1 + 6*5*4 + 9*8*7 + 12*11*10 + ... + (up to the n-th term).

Table of values

List of values

A319867 a(n) = 321 + 654 + 987 + 121110 + ... + (up to the n-th term).