A352940 - cp's OEIS frontend

A352940 The largest positive integer k such that binomial(k+1,2) <= binomial(n,2)^2.

n	a(n)
3	3
4	8
5	13
6	20
7	29
8	39
9	50
10	63
11	77
12	92
13	109
14	128
15	147
16	169
17	191
18	215
19	241
20	268
21	296
22	326
23	357
24	389
25	423
26	459
27	495
28	534
29	573
30	614
31	657
32	700
33	746
34	792
35	840
36	890
37	941
38	993
39	1047
40	1102
41	1159
42	1217
43	1276
44	1337
45	1399
46	1463
47	1528
48	1594
49	1662
50	1731
51	1802
52	1874
53	1948

[3, 8, 13, 20, 29, 39, 50, 63, 77, 92, 109, 128, 147, 169, 191, 215, 241, 268, 296, 326, 357, 389, 423, 459, 495, 534, 573, 614, 657, 700, 746, 792, 840, 890, 941, 993, 1047, 1102, 1159, 1217, 1276, 1337, 1399, 1463, 1528, 1594, 1662, 1731, 1802, 1874, 1948]

cp's OEIS Frontend

A352940 The largest positive integer k such that binomial(k+1,2) <= binomial(n,2)^2.

Table of values

List of values