A218219 - cp's OEIS frontend

A218219 Define a(x,y) to be 1 if x is 0 or 1 and y*a(x-1,y)-a(x-2,y) otherwise. Then the n-th term of the sequence is a(n,n).

n	a(n)
0	1
1	1
2	1
3	5
4	41
5	436
6	5741
7	90481
8	1663585
9	34988311
10	828931049
11	21851881930
12	634556225161
13	20129592507025
14	692665874901013
15	25699370092119569
16	1022757988416562049
17	43461563755791470416
18	1964206882303435582865
19	94076863910519354420761
20	4760163616791818063701801

[1, 1, 1, 5, 41, 436, 5741, 90481, 1663585, 34988311, 828931049, 21851881930, 634556225161, 20129592507025, 692665874901013, 25699370092119569, 1022757988416562049, 43461563755791470416, 1964206882303435582865, 94076863910519354420761, 4760163616791818063701801]

cp's OEIS Frontend

A218219 Define a(x,y) to be 1 if x is 0 or 1 and y*a(x-1,y)-a(x-2,y) otherwise. Then the n-th term of the sequence is a(n,n).

Table of values

List of values