A133308 - cp's OEIS frontend

A133308 a(n) = (1/n)Sum_{i=0..n-1} C(n,i)C(n,i+1)7^i8^(n-i), a(0)=1.

n	a(n)
0	1
1	8
2	120
3	2248
4	47160
5	1059976
6	24958200
7	607693640
8	15175702200
9	386555020552
10	10004252294520
11	262321706465736
12	6953918939056440
13	186059575955360136
14	5018045415643478520
15	136276936332343342152
16	3723442515218861494200
17	102281105054908404972040

[1, 8, 120, 2248, 47160, 1059976, 24958200, 607693640, 15175702200, 386555020552, 10004252294520, 262321706465736, 6953918939056440, 186059575955360136, 5018045415643478520, 136276936332343342152, 3723442515218861494200, 102281105054908404972040]

cp's OEIS Frontend

A133308 a(n) = (1/n)Sum_{i=0..n-1} C(n,i)C(n,i+1)7^i8^(n-i), a(0)=1.

Table of values

List of values

cp's OEIS Frontend

A133308 a(n) = (1/n)*Sum_{i=0..n-1} C(n,i)*C(n,i+1)*7^i*8^(n-i), a(0)=1.

Table of values

List of values

A133308 a(n) = (1/n)Sum_{i=0..n-1} C(n,i)C(n,i+1)7^i8^(n-i), a(0)=1.