A227506 - cp's OEIS frontend

A227506 Schroeder triangle sums: a(2n-1) = A010683(2n-2) and a(2n) = A010683(2n-1) - A001003(2*n-1).

n	a(n)
1	1
2	1
3	7
4	17
5	121
6	353
7	2591
8	8257
9	61921
10	207905
11	1582791
12	5501073
13	42344121
14	150827073
15	1170747519
16	4247388417
17	33186295681
18	122125206977
19	959260792775
20	3570473750929
21	28167068630713
22	105820555054241
23	837838806587167
24	3172136074486337

[1, 1, 7, 17, 121, 353, 2591, 8257, 61921, 207905, 1582791, 5501073, 42344121, 150827073, 1170747519, 4247388417, 33186295681, 122125206977, 959260792775, 3570473750929, 28167068630713, 105820555054241, 837838806587167, 3172136074486337]

cp's OEIS Frontend

A227506 Schroeder triangle sums: a(2n-1) = A010683(2n-2) and a(2n) = A010683(2n-1) - A001003(2*n-1).

Table of values

List of values

cp's OEIS Frontend

A227506 Schroeder triangle sums: a(2*n-1) = A010683(2*n-2) and a(2*n) = A010683(2*n-1) - A001003(2*n-1).

Table of values

List of values

A227506 Schroeder triangle sums: a(2n-1) = A010683(2n-2) and a(2n) = A010683(2n-1) - A001003(2*n-1).