A245849 - cp's OEIS frontend

A245849 Number of length n 0..6 arrays with new values introduced in order from both ends, and least squares fitting to a straight line with slope zero, with a single point taken as having zero slope.

n	a(n)
1	1
2	1
3	2
4	2
5	5
6	5
7	15
8	17
9	78
10	102
11	569
12	919
13	6143
14	11171
15	86081
16	175169
17	1500038
18	3364000
19	31525459
20	76939147
21	780320735
22	2050031495
23	22262632431
24	62282672077
25	716105605234
26	2108542401240
27	25363729963607
28	77679827847931

[1, 1, 2, 2, 5, 5, 15, 17, 78, 102, 569, 919, 6143, 11171, 86081, 175169, 1500038, 3364000, 31525459, 76939147, 780320735, 2050031495, 22262632431, 62282672077, 716105605234, 2108542401240, 25363729963607, 77679827847931]

cp's OEIS Frontend

A245849 Number of length n 0..6 arrays with new values introduced in order from both ends, and least squares fitting to a straight line with slope zero, with a single point taken as having zero slope.

Table of values

List of values