A085788 - cp's OEIS frontend

A085788 Partial sums of n 3-spaced triangular numbers beginning with t(3), e.g., a(2) = t(3)+t(6) = 6+21 = 27.

n	a(n)
1	6
2	27
3	72
4	150
5	270
6	441
7	672
8	972
9	1350
10	1815
11	2376
12	3042
13	3822
14	4725
15	5760
16	6936
17	8262
18	9747
19	11400
20	13230
21	15246
22	17457
23	19872
24	22500
25	25350
26	28431
27	31752
28	35322
29	39150
30	43245
31	47616
32	52272
33	57222
34	62475
35	68040
36	73926
37	80142
38	86697
39	93600
40	100860
41	108486

[6, 27, 72, 150, 270, 441, 672, 972, 1350, 1815, 2376, 3042, 3822, 4725, 5760, 6936, 8262, 9747, 11400, 13230, 15246, 17457, 19872, 22500, 25350, 28431, 31752, 35322, 39150, 43245, 47616, 52272, 57222, 62475, 68040, 73926, 80142, 86697, 93600, 100860, 108486]

cp's OEIS Frontend

A085788 Partial sums of n 3-spaced triangular numbers beginning with t(3), e.g., a(2) = t(3)+t(6) = 6+21 = 27.

Table of values

List of values