A059116 - cp's OEIS frontend

A059116 The sequence lambda(4,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly four starting and/or finishing points.

n	a(n)
0	0
1	0
2	6
3	114
4	978
5	6810
6	43746
7	271194
8	1653378
9	9998970
10	60229986
11	362088474
12	2174656578
13	13054316730
14	78345032226
15	470127588954
16	2820937720578
17	16926142884090
18	101558406986466
19	609355090964634
20	3656144492925378

[0, 0, 6, 114, 978, 6810, 43746, 271194, 1653378, 9998970, 60229986, 362088474, 2174656578, 13054316730, 78345032226, 470127588954, 2820937720578, 16926142884090, 101558406986466, 609355090964634, 3656144492925378]

cp's OEIS Frontend

A059116 The sequence lambda(4,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly four starting and/or finishing points.

Table of values

List of values