A244469 - cp's OEIS frontend

A244469 a(0) = 0, thereafter, a(n) = 2^(2n-1)( binomial((3n-1)/2,n) - binomial(3n/2, n)/3 ).

n	a(n)
0	0
1	1
2	7
3	58
4	515
5	4746
6	44758
7	428772
8	4154403
9	40599130
10	399429602
11	3950996556
12	39255152846
13	391466112324
14	3916110379020
15	39281346256008
16	394942611929379
17	3978982062756090
18	40160256911157610
19	405995113593507900
20	4110284071450416090
21	41666530928566504620
22	422876855107176561780

[0, 1, 7, 58, 515, 4746, 44758, 428772, 4154403, 40599130, 399429602, 3950996556, 39255152846, 391466112324, 3916110379020, 39281346256008, 394942611929379, 3978982062756090, 40160256911157610, 405995113593507900, 4110284071450416090, 41666530928566504620, 422876855107176561780]

cp's OEIS Frontend

A244469 a(0) = 0, thereafter, a(n) = 2^(2n-1)( binomial((3n-1)/2,n) - binomial(3n/2, n)/3 ).

Table of values

List of values

cp's OEIS Frontend

A244469 a(0) = 0, thereafter, a(n) = 2^(2*n-1)*( binomial((3*n-1)/2,n) - binomial(3*n/2, n)/3 ).

Table of values

List of values

A244469 a(0) = 0, thereafter, a(n) = 2^(2n-1)( binomial((3n-1)/2,n) - binomial(3n/2, n)/3 ).