A194719 - cp's OEIS frontend

A194719 Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting seven doublets into the initially empty word.

n	a(n)
0	0
1	1
2	1716
3	54573
4	492724
5	2467137
6	8786436
7	25066621
8	61189668
9	133071009
10	264735892
11	490704621
12	858686676
13	1432583713
14	2295801444
15	3554870397
16	5343375556
17	7826194881
18	11204046708
19	15718346029
20	21656369652
21	29356730241
22	39215159236
23	51690598653
24	67311601764

[0, 1, 1716, 54573, 492724, 2467137, 8786436, 25066621, 61189668, 133071009, 264735892, 490704621, 858686676, 1432583713, 2295801444, 3554870397, 5343375556, 7826194881, 11204046708, 15718346029, 21656369652, 29356730241, 39215159236, 51690598653, 67311601764]

cp's OEIS Frontend

A194719 Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting seven doublets into the initially empty word.

Table of values

List of values