A238377 - OEIS

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A238377 as a simple table

n	a(n)
0	1
1	2
2	6
3	10
4	17
5	24
6	34
7	44
8	57
9	70
10	86
11	102
12	121
13	140
14	162
15	184
16	209
17	234
18	262
19	290
20	321
21	352
22	386
23	420
24	457
25	494
26	534
27	574
28	617
29	660
30	706
31	752
32	801
33	850
34	902
35	954
36	1009
37	1064
38	1122
39	1180

[1,2,6,10,17,24,34,44,57,70,86,102,121,140,162, 184,209,234,262,290,321,352,386,420,457,494,534, 574,617,660,706,752,801,850,902,954,1009,1064, 1122,1180]