A336630 - cp's OEIS frontend

A336630 a(n) = 2F(2n+1) + 4F(n+1)F(n-1) for n > 0, with a(0) = 0 and F(n) = A000045(n).

n	a(n)
0	0
1	4
2	18
3	38
4	108
5	274
6	726
7	1892
8	4962
9	12982
10	33996
11	88994
12	232998
13	609988
14	1596978
15	4180934
16	10945836
17	28656562
18	75023862
19	196415012
20	514221186
21	1346248534
22	3524524428
23	9227324738
24	24157449798
25	63245024644
26	165577624146
27	433487847782

[0, 4, 18, 38, 108, 274, 726, 1892, 4962, 12982, 33996, 88994, 232998, 609988, 1596978, 4180934, 10945836, 28656562, 75023862, 196415012, 514221186, 1346248534, 3524524428, 9227324738, 24157449798, 63245024644, 165577624146, 433487847782]

cp's OEIS Frontend

A336630 a(n) = 2F(2n+1) + 4F(n+1)F(n-1) for n > 0, with a(0) = 0 and F(n) = A000045(n).

Table of values

List of values

cp's OEIS Frontend

A336630 a(n) = 2*F(2*n+1) + 4*F(n+1)*F(n-1) for n > 0, with a(0) = 0 and F(n) = A000045(n).

Table of values

List of values

A336630 a(n) = 2F(2n+1) + 4F(n+1)F(n-1) for n > 0, with a(0) = 0 and F(n) = A000045(n).