A069007 - cp's OEIS frontend

A069007 Let M denote the 6 X 6 matrix with rows /1,1,1,1,1,1/1,1,1,1,1,0/1,1,1,1,0,0/1,1,1,0,0,0/1,1,0,0,0,0/1,0,0,0,0,0/ and A(n) the vector (x(n),y(n),z(n),t(n),u(n),v(n)) = M^n*A where A is the vector (1,1,1,1,1,1); then a(n) = y(n).

n	a(n)
0	1
1	5
2	20
3	85
4	350
5	1456
6	6034
7	25038
8	103849
9	430794
10	1786960
11	7412548
12	30748055
13	127546530
14	529077571
15	2194674687
16	9103762600
17	37763453591
18	156647144355
19	649790354877
20	2695405055655
21	11180849888139
22	46379450073255

[1, 5, 20, 85, 350, 1456, 6034, 25038, 103849, 430794, 1786960, 7412548, 30748055, 127546530, 529077571, 2194674687, 9103762600, 37763453591, 156647144355, 649790354877, 2695405055655, 11180849888139, 46379450073255]

cp's OEIS Frontend

A069007 Let M denote the 6 X 6 matrix with rows /1,1,1,1,1,1/1,1,1,1,1,0/1,1,1,1,0,0/1,1,1,0,0,0/1,1,0,0,0,0/1,0,0,0,0,0/ and A(n) the vector (x(n),y(n),z(n),t(n),u(n),v(n)) = M^n*A where A is the vector (1,1,1,1,1,1); then a(n) = y(n).

Table of values

List of values