A372593 - cp's OEIS frontend

A372593 Irregular triangle read by rows, where the n-th row gives the number of steps in the hydra game when the initial hydra is each of the A000108(n) ordered trees with n edges (ordered by lexicographic order of their corresponding Dyck words as in A063171) and new heads are grown to the left.

n	a(n)
0	0
1	1
2	2
3	3
4	3
5	4
6	5
7	6
8	9
9	4
10	5
11	6
12	7
13	10
14	7
15	8
16	9
17	10
18	14
19	18
20	19
21	25
22	49
23	5
24	6
25	7
26	8
27	11
28	8
29	9
30	10
31	11
32	15
33	19
34	20
35	26
36	50
37	9
38	10
39	11
40	12
41	16
42	12
43	13
44	14
45	15
46	20
47	25
48	26
49	33
50	60
51	30
52	31
53	32
54	33
55	41
56	49
57	50
58	60
59	110
60	175
61	176
62	195
63	330
64	1230

[0, 1, 2, 3, 3, 4, 5, 6, 9, 4, 5, 6, 7, 10, 7, 8, 9, 10, 14, 18, 19, 25, 49, 5, 6, 7, 8, 11, 8, 9, 10, 11, 15, 19, 20, 26, 50, 9, 10, 11, 12, 16, 12, 13, 14, 15, 20, 25, 26, 33, 60, 30, 31, 32, 33, 41, 49, 50, 60, 110, 175, 176, 195, 330, 1230]

cp's OEIS Frontend

A372593 Irregular triangle read by rows, where the n-th row gives the number of steps in the hydra game when the initial hydra is each of the A000108(n) ordered trees with n edges (ordered by lexicographic order of their corresponding Dyck words as in A063171) and new heads are grown to the left.

Table of values

List of values