A170930 - cp's OEIS frontend

A170930 G(n,1) with n index G(n,i)=n(G(n,i-1)+G(n,i-2))=(a^i-b^i)d where d=sqrt(n*(n+4)); a=(n+d)/2; b=(n-d)/2.

n	a(n)
0	0
1	21
2	63
3	252
4	945
5	3591
6	13608
7	51597
8	195615
9	741636
10	2811753
11	10660167
12	40415760
13	153227781
14	580930623
15	2202475212
16	8350217505
17	31658078151
18	120024886968
19	455048895357
20	1725221346975
21	6540810726996
22	24798096221913

[0, 21, 63, 252, 945, 3591, 13608, 51597, 195615, 741636, 2811753, 10660167, 40415760, 153227781, 580930623, 2202475212, 8350217505, 31658078151, 120024886968, 455048895357, 1725221346975, 6540810726996, 24798096221913]

cp's OEIS Frontend

A170930 G(n,1) with n index G(n,i)=n(G(n,i-1)+G(n,i-2))=(a^i-b^i)d where d=sqrt(n*(n+4)); a=(n+d)/2; b=(n-d)/2.

Table of values

List of values

cp's OEIS Frontend

A170930 G(n,1) with n index G(n,i)=n*(G(n,i-1)+G(n,i-2))=(a^i-b^i)*d where d=sqrt(n*(n+4)); a=(n+d)/2; b=(n-d)/2.

Table of values

List of values

A170930 G(n,1) with n index G(n,i)=n(G(n,i-1)+G(n,i-2))=(a^i-b^i)d where d=sqrt(n*(n+4)); a=(n+d)/2; b=(n-d)/2.