A194727 - cp's OEIS frontend

A194727 Number of 7-ary words either empty or beginning with the first character of the alphabet, that can be built by inserting n doublets into the initially empty word.

n	a(n)
0	1
1	1
2	13
3	205
4	3565
5	65821
6	1265677
7	25066621
8	507709165
9	10466643805
10	218878998733
11	4631531585341
12	98980721277613
13	2133274258946845
14	46313701181477005
15	1011889827742935805
16	22232378278653590125
17	490899296804667191005
18	10887346288742800406605

[1, 1, 13, 205, 3565, 65821, 1265677, 25066621, 507709165, 10466643805, 218878998733, 4631531585341, 98980721277613, 2133274258946845, 46313701181477005, 1011889827742935805, 22232378278653590125, 490899296804667191005, 10887346288742800406605]

cp's OEIS Frontend

A194727 Number of 7-ary words either empty or beginning with the first character of the alphabet, that can be built by inserting n doublets into the initially empty word.

Table of values

List of values