A005891 - OEIS

A005891 as a simple table

n	a(n)
0	1
1	6
2	16
3	31
4	51
5	76
6	106
7	141
8	181
9	226
10	276
11	331
12	391
13	456
14	526
15	601
16	681
17	766
18	856
19	951
20	1051
21	1156
22	1266
23	1381
24	1501
25	1626
26	1756
27	1891
28	2031
29	2176
30	2326
31	2481
32	2641
33	2806
34	2976
35	3151
36	3331
37	3516
38	3706
39	3901
40	4101
41	4306
42	4516
43	4731
44	4951
45	5176
46	5406

[1,6,16,31,51,76,106,141,181,226,276,331,391,456, 526,601,681,766,856,951,1051,1156,1266,1381,1501, 1626,1756,1891,2031,2176,2326,2481,2641,2806,2976, 3151,3331,3516,3706,3901,4101,4306,4516,4731,4951, 5176,5406]