A051936 - cp's OEIS frontend

A051936 Truncated triangular numbers: a(n) = n*(n+1)/2 - 9.

n	a(n)
4	1
5	6
6	12
7	19
8	27
9	36
10	46
11	57
12	69
13	82
14	96
15	111
16	127
17	144
18	162
19	181
20	201
21	222
22	244
23	267
24	291
25	316
26	342
27	369
28	397
29	426
30	456
31	487
32	519
33	552
34	586
35	621
36	657
37	694
38	732
39	771
40	811
41	852
42	894
43	937
44	981
45	1026
46	1072
47	1119
48	1167
49	1216
50	1266
51	1317
52	1369
53	1422
54	1476

[1, 6, 12, 19, 27, 36, 46, 57, 69, 82, 96, 111, 127, 144, 162, 181, 201, 222, 244, 267, 291, 316, 342, 369, 397, 426, 456, 487, 519, 552, 586, 621, 657, 694, 732, 771, 811, 852, 894, 937, 981, 1026, 1072, 1119, 1167, 1216, 1266, 1317, 1369, 1422, 1476]

cp's OEIS Frontend

A051936 Truncated triangular numbers: a(n) = n*(n+1)/2 - 9.

Table of values

List of values