A112328 - cp's OEIS frontend

A112328 a(n) = (n+1)binomial(2n+2,n+1)-34^n+binomial(2n,n).

n	a(n)
1	2
2	18
3	108
4	562
5	2724
6	12660
7	57240
8	253842
9	1109748
10	4798780
11	20572392
12	87580308
13	370706408
14	1561573032
15	6551178288
16	27387484242
17	114146434068
18	474476717292
19	1967642119368
20	8142727008732
21	33634295542968
22	138696447565272
23	571069686589008
24	2348087834494932

[2, 18, 108, 562, 2724, 12660, 57240, 253842, 1109748, 4798780, 20572392, 87580308, 370706408, 1561573032, 6551178288, 27387484242, 114146434068, 474476717292, 1967642119368, 8142727008732, 33634295542968, 138696447565272, 571069686589008, 2348087834494932]

cp's OEIS Frontend

A112328 a(n) = (n+1)binomial(2n+2,n+1)-34^n+binomial(2n,n).

Table of values

List of values

cp's OEIS Frontend

A112328 a(n) = (n+1)*binomial(2n+2,n+1)-3*4^n+binomial(2n,n).

Table of values

List of values

A112328 a(n) = (n+1)binomial(2n+2,n+1)-34^n+binomial(2n,n).