A099885 - cp's OEIS frontend

A099885 Central terms of the rows of the XOR difference triangle of the powers of 2 (A099884) so that a(n) = A099884(n, floor(n/2)).

n	a(n)
0	1
1	2
2	6
3	12
4	20
5	40
6	120
7	240
8	272
9	544
10	1632
11	3264
12	5440
13	10880
14	32640
15	65280
16	65792
17	131584
18	394752
19	789504
20	1315840
21	2631680
22	7895040
23	15790080
24	17895424
25	35790848
26	107372544
27	214745088
28	357908480
29	715816960
30	2147450880
31	4294901760

[1, 2, 6, 12, 20, 40, 120, 240, 272, 544, 1632, 3264, 5440, 10880, 32640, 65280, 65792, 131584, 394752, 789504, 1315840, 2631680, 7895040, 15790080, 17895424, 35790848, 107372544, 214745088, 357908480, 715816960, 2147450880, 4294901760]

cp's OEIS Frontend

A099885 Central terms of the rows of the XOR difference triangle of the powers of 2 (A099884) so that a(n) = A099884(n, floor(n/2)).

Table of values

List of values