A081016 - cp's OEIS frontend

A081016 a(n) = (Lucas(4n+3) + 1)/5, or Fibonacci(2n+1)Fibonacci(2n+2), or A081015(n)/5.

n	a(n)
0	1
1	6
2	40
3	273
4	1870
5	12816
6	87841
7	602070
8	4126648
9	28284465
10	193864606
11	1328767776
12	9107509825
13	62423800998
14	427859097160
15	2932589879121
16	20100270056686
17	137769300517680
18	944284833567073
19	6472224534451830

[1, 6, 40, 273, 1870, 12816, 87841, 602070, 4126648, 28284465, 193864606, 1328767776, 9107509825, 62423800998, 427859097160, 2932589879121, 20100270056686, 137769300517680, 944284833567073, 6472224534451830]

cp's OEIS Frontend

A081016 a(n) = (Lucas(4n+3) + 1)/5, or Fibonacci(2n+1)Fibonacci(2n+2), or A081015(n)/5.

Table of values

List of values

cp's OEIS Frontend

A081016 a(n) = (Lucas(4*n+3) + 1)/5, or Fibonacci(2*n+1)*Fibonacci(2*n+2), or A081015(n)/5.

Table of values

List of values

A081016 a(n) = (Lucas(4n+3) + 1)/5, or Fibonacci(2n+1)Fibonacci(2n+2), or A081015(n)/5.