A361889 - cp's OEIS frontend

A361889 a(n) = S(5,2n-1)/S(1,2n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.

n	a(n)
1	1
2	11
3	415
4	30955
5	3173626
6	386672861
7	52846226091
8	7857161332715
9	1246162831674580
10	207990691516965886
11	36176886727828945286
12	6510211391453319830461
13	1205449991704260042021490
14	228686327051301858363357905
15	44299708036441260810228742915
16	8738765548899621077157770551275

[1, 11, 415, 30955, 3173626, 386672861, 52846226091, 7857161332715, 1246162831674580, 207990691516965886, 36176886727828945286, 6510211391453319830461, 1205449991704260042021490, 228686327051301858363357905, 44299708036441260810228742915, 8738765548899621077157770551275]

cp's OEIS Frontend

A361889 a(n) = S(5,2n-1)/S(1,2n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.

Table of values

List of values

cp's OEIS Frontend

A361889 a(n) = S(5,2*n-1)/S(1,2*n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.

Table of values

List of values

A361889 a(n) = S(5,2n-1)/S(1,2n-1), where S(r,n) = Sum_{k = 0..floor(n/2)} ( binomial(n,k) - binomial(n,k-1) )^r.