A072985 - cp's OEIS frontend

A072985 Coefficient of the highest power of q in the expansion of nu(0)=1, nu(1)=b and for n >= 2, nu(n) = bnu(n-1) + lambda(n-1)_q*nu(n-2) with (b,lambda)=(2,3), where (n)_q = (1+q+...+q^(n-1)) and q is a root of unity.

n	a(n)
0	1
1	2
2	7
3	6
4	21
5	18
6	63
7	54
8	189
9	162
10	567
11	486
12	1701
13	1458
14	5103
15	4374
16	15309
17	13122
18	45927
19	39366
20	137781
21	118098
22	413343
23	354294
24	1240029
25	1062882
26	3720087
27	3188646
28	11160261
29	9565938
30	33480783
31	28697814
32	100442349
33	86093442

[1, 2, 7, 6, 21, 18, 63, 54, 189, 162, 567, 486, 1701, 1458, 5103, 4374, 15309, 13122, 45927, 39366, 137781, 118098, 413343, 354294, 1240029, 1062882, 3720087, 3188646, 11160261, 9565938, 33480783, 28697814, 100442349, 86093442]

cp's OEIS Frontend

A072985 Coefficient of the highest power of q in the expansion of nu(0)=1, nu(1)=b and for n >= 2, nu(n) = bnu(n-1) + lambda(n-1)_q*nu(n-2) with (b,lambda)=(2,3), where (n)_q = (1+q+...+q^(n-1)) and q is a root of unity.

Table of values

List of values

cp's OEIS Frontend

A072985 Coefficient of the highest power of q in the expansion of nu(0)=1, nu(1)=b and for n >= 2, nu(n) = b*nu(n-1) + lambda*(n-1)_q*nu(n-2) with (b,lambda)=(2,3), where (n)_q = (1+q+...+q^(n-1)) and q is a root of unity.

Table of values

List of values

A072985 Coefficient of the highest power of q in the expansion of nu(0)=1, nu(1)=b and for n >= 2, nu(n) = bnu(n-1) + lambda(n-1)_q*nu(n-2) with (b,lambda)=(2,3), where (n)_q = (1+q+...+q^(n-1)) and q is a root of unity.