A061557 - cp's OEIS frontend

A061557 a(n) = (7n+2)C(n)/(n+2), where C(n) is the n-th Catalan number.

n	a(n)
1	3
2	8
3	23
4	70
5	222
6	726
7	2431
8	8294
9	28730
10	100776
11	357238
12	1277788
13	4605980
14	16715250
15	61020495
16	223931910
17	825632610
18	3056887680
19	11360977650
20	42368413620
21	158498860260
22	594636663660
23	2236748680998
24	8433988655580

[3, 8, 23, 70, 222, 726, 2431, 8294, 28730, 100776, 357238, 1277788, 4605980, 16715250, 61020495, 223931910, 825632610, 3056887680, 11360977650, 42368413620, 158498860260, 594636663660, 2236748680998, 8433988655580]

cp's OEIS Frontend

A061557 a(n) = (7n+2)C(n)/(n+2), where C(n) is the n-th Catalan number.

Table of values

List of values

cp's OEIS Frontend

A061557 a(n) = (7*n+2)*C(n)/(n+2), where C(n) is the n-th Catalan number.

Table of values

List of values

A061557 a(n) = (7n+2)C(n)/(n+2), where C(n) is the n-th Catalan number.