A147721 - cp's OEIS frontend

A147721 a(n) = C(2,n) DELTA C(0,n).

n	a(n)
0	1
1	1
2	1
3	3
4	4
5	1
6	11
7	17
8	7
9	1
10	41
11	72
12	40
13	10
14	1
15	153
16	301
17	208
18	72
19	13
20	1
21	571
22	1244
23	1021
24	446
25	113
26	16
27	1
28	2131
29	5093
30	4819
31	2525
32	813
33	163
34	19
35	1
36	7953
37	20688
38	22104
39	13452
40	5218
41	1336
42	222
43	22
44	1
45	29681
46	83481
47	99192
48	68568
49	30986
50	9586
51	2042
52	290
53	25
54	1

[1, 1, 1, 3, 4, 1, 11, 17, 7, 1, 41, 72, 40, 10, 1, 153, 301, 208, 72, 13, 1, 571, 1244, 1021, 446, 113, 16, 1, 2131, 5093, 4819, 2525, 813, 163, 19, 1, 7953, 20688, 22104, 13452, 5218, 1336, 222, 22, 1, 29681, 83481, 99192, 68568, 30986, 9586, 2042, 290, 25, 1]

cp's OEIS Frontend

A147721 a(n) = C(2,n) DELTA C(0,n).

Table of values

List of values