A245844 - cp's OEIS frontend

A245844 Number of length n 0..n 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	86082
16	175170
17	1500089
18	3364343
19	31536051
20	77010521
21	782091916
22	2060257730
23	22485413587
24	63440153687
25	739249776945
26	2220625119939
27	27479009460738
28	87449057712710

[1, 1, 2, 2, 5, 5, 15, 17, 78, 102, 569, 919, 6143, 11171, 86082, 175170, 1500089, 3364343, 31536051, 77010521, 782091916, 2060257730, 22485413587, 63440153687, 739249776945, 2220625119939, 27479009460738, 87449057712710]

cp's OEIS Frontend

A245844 Number of length n 0..n 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