A373752 - cp's OEIS frontend

A373752 a(n) = Sum_{k=0..n-2} A205497(n, k) * (1 - k mod 2) if n >= 2, a(0) = a(1) = 1.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	8
6	33
7	136
8	670
9	3968
10	25593
11	176896
12	1344154
13	11184128
14	99897361
15	951878656
16	9687175862
17	104932671488
18	1202872541673
19	14544442556416
20	185158504589938
21	2475749026562048
22	34676498435503489
23	507711943253426176
24	7757079744889072462
25	123460740095103991808

[1, 1, 1, 1, 2, 8, 33, 136, 670, 3968, 25593, 176896, 1344154, 11184128, 99897361, 951878656, 9687175862, 104932671488, 1202872541673, 14544442556416, 185158504589938, 2475749026562048, 34676498435503489, 507711943253426176, 7757079744889072462, 123460740095103991808]

cp's OEIS Frontend

A373752 a(n) = Sum_{k=0..n-2} A205497(n, k) * (1 - k mod 2) if n >= 2, a(0) = a(1) = 1.

Table of values

List of values