A352278 - cp's OEIS frontend

A352278 a(0) = 1; a(n) = -3 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).

n	a(n)
0	1
1	-3
2	24
3	-273
4	3399
5	-31728
6	-280371
7	26388177
8	-580539936
9	-17406321933
10	1809690920979
11	-18045563411208
12	-6249108953966151
13	333062472085204677
14	27673022056089337224
15	-3800202930423874873353
16	-139584280492439116159521
17	52779027474493111545620352
18	279012844299708383976573189

[1, -3, 24, -273, 3399, -31728, -280371, 26388177, -580539936, -17406321933, 1809690920979, -18045563411208, -6249108953966151, 333062472085204677, 27673022056089337224, -3800202930423874873353, -139584280492439116159521, 52779027474493111545620352, 279012844299708383976573189]

cp's OEIS Frontend

A352278 a(0) = 1; a(n) = -3 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).

Table of values

List of values

cp's OEIS Frontend

A352278 a(0) = 1; a(n) = -3 * Sum_{k=1..n} binomial(2*n-1,2*k-1) * a(n-k).

Table of values

List of values

A352278 a(0) = 1; a(n) = -3 * Sum_{k=1..n} binomial(2n-1,2k-1) * a(n-k).