A349280 - cp's OEIS frontend

A349280 Irregular triangle read by rows: T(n,k) is the number of arrangements of n labeled children with exactly k rounds; n >= 2, 1 <= k <= floor(n/2).

n	a(n)
2	2
3	3
4	8
5	12
6	30
7	60
8	144
9	330
10	120
11	840
12	2100
13	1260
14	5760
15	15344
16	11760
17	1680
18	45360
19	127008
20	113400
21	30240
22	403200
23	1176120
24	1169280
25	428400
26	30240
27	3991680
28	12054240
29	13000680
30	5821200
31	831600
32	43545600
33	135508032
34	155923680
35	80415720
36	16632000
37	665280

[2, 3, 8, 12, 30, 60, 144, 330, 120, 840, 2100, 1260, 5760, 15344, 11760, 1680, 45360, 127008, 113400, 30240, 403200, 1176120, 1169280, 428400, 30240, 3991680, 12054240, 13000680, 5821200, 831600, 43545600, 135508032, 155923680, 80415720, 16632000, 665280]

cp's OEIS Frontend

A349280 Irregular triangle read by rows: T(n,k) is the number of arrangements of n labeled children with exactly k rounds; n >= 2, 1 <= k <= floor(n/2).

Table of values

List of values