A190660 - cp's OEIS frontend

A190660 Number of triangular numbers T(k) between powers of 2, 2^(n-1) < T(k) <= 2^n.

n	a(n)
0	1
1	0
2	1
3	1
4	2
5	2
6	3
7	5
8	7
9	9
10	13
11	19
12	27
13	37
14	53
15	75
16	106
17	150
18	212
19	300
20	424
21	600
22	848
23	1200
24	1697
25	2399
26	3393
27	4799
28	6786
29	9598
30	13573
31	19195
32	27146
33	38390
34	54292
35	76780
36	108584
37	153560
38	217167
39	307121
40	434334
41	614242
42	868669
43	1228483
44	1737338
45	2456966

[1, 0, 1, 1, 2, 2, 3, 5, 7, 9, 13, 19, 27, 37, 53, 75, 106, 150, 212, 300, 424, 600, 848, 1200, 1697, 2399, 3393, 4799, 6786, 9598, 13573, 19195, 27146, 38390, 54292, 76780, 108584, 153560, 217167, 307121, 434334, 614242, 868669, 1228483, 1737338, 2456966]

cp's OEIS Frontend

A190660 Number of triangular numbers T(k) between powers of 2, 2^(n-1) < T(k) <= 2^n.

Table of values

List of values