A370163 - cp's OEIS frontend

A370163 a(0) = 2, a(n) = (-1)^n + (-2)^n + (1/2) * Sum_{j=1..n} (1-(-1)^j-(-2)^j) * binomial(n,j) * a(n-j) for n > 0.

n	a(n)
0	2
1	1
2	5
3	25
4	161
5	1321
6	13025
7	149605
8	1963841
9	29004721
10	475975745
11	8591917885
12	169193833121
13	3609452038921
14	82924458549665
15	2041207822721365
16	53594538159184001
17	1495143168658285921
18	44164021453758342785
19	1377005070100813288045
20	45193800193226286112481

[2, 1, 5, 25, 161, 1321, 13025, 149605, 1963841, 29004721, 475975745, 8591917885, 169193833121, 3609452038921, 82924458549665, 2041207822721365, 53594538159184001, 1495143168658285921, 44164021453758342785, 1377005070100813288045, 45193800193226286112481]

cp's OEIS Frontend

A370163 a(0) = 2, a(n) = (-1)^n + (-2)^n + (1/2) * Sum_{j=1..n} (1-(-1)^j-(-2)^j) * binomial(n,j) * a(n-j) for n > 0.

Table of values

List of values