A074353 - cp's OEIS frontend

A074353 Coefficient of q^2 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=bnu(n-1)+lambda(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,2).

n	a(n)
0	0
1	0
2	0
3	0
4	6
5	20
6	70
7	196
8	542
9	1396
10	3526
11	8628
12	20766
13	49092
14	114598
15	264356
16	603998
17	1368148
18	3076166
19	6870740
20	15256158
21	33696804
22	74073510
23	162127940
24	353460766
25	767816500
26	1662394310
27	3588252916
28	7723318942
29	16580031876
30	35506388646
31	75864499428

[0, 0, 0, 0, 6, 20, 70, 196, 542, 1396, 3526, 8628, 20766, 49092, 114598, 264356, 603998, 1368148, 3076166, 6870740, 15256158, 33696804, 74073510, 162127940, 353460766, 767816500, 1662394310, 3588252916, 7723318942, 16580031876, 35506388646, 75864499428]

cp's OEIS Frontend

A074353 Coefficient of q^2 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=bnu(n-1)+lambda(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,2).

Table of values

List of values

cp's OEIS Frontend

A074353 Coefficient of q^2 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=b*nu(n-1)+lambda*(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,2).

Table of values

List of values

A074353 Coefficient of q^2 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=bnu(n-1)+lambda(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,2).