A361891 - cp's OEIS frontend

A361891 a(n) = S(7,n)/S(1,n), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.

n	a(n)
0	1
1	1
2	1
3	43
4	386
5	9451
6	246961
7	6031627
8	212559508
9	6571985126
10	243940325734
11	9140730357409
12	352312505157354
13	14801600281919487
14	600054439936968241
15	26927918031565051915
16	1149140935414286560040
17	53804800109969394477580
18	2401141625752684697505820

[1, 1, 1, 43, 386, 9451, 246961, 6031627, 212559508, 6571985126, 243940325734, 9140730357409, 352312505157354, 14801600281919487, 600054439936968241, 26927918031565051915, 1149140935414286560040, 53804800109969394477580, 2401141625752684697505820]

cp's OEIS Frontend

A361891 a(n) = S(7,n)/S(1,n), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.

Table of values

List of values