A337352 - cp's OEIS frontend

A337352 a(n) is the number of lattice paths from (0,0) to (3n,3n) using only the steps (1,0) and (0,1) and which do not touch any other points of the form (3k,3k).

n	a(n)
0	1
1	20
2	524
3	19660
4	854380
5	40304080
6	2004409236
7	103440770760
8	5486614131756
9	297239307415792
10	16376472734974384
11	914734188877259884
12	51680064605716043636
13	2948046519564292501232
14	169560941932509940657016
15	9822377923336683964009296
16	572554753384166308597716396

[1, 20, 524, 19660, 854380, 40304080, 2004409236, 103440770760, 5486614131756, 297239307415792, 16376472734974384, 914734188877259884, 51680064605716043636, 2948046519564292501232, 169560941932509940657016, 9822377923336683964009296, 572554753384166308597716396]

cp's OEIS Frontend

A337352 a(n) is the number of lattice paths from (0,0) to (3n,3n) using only the steps (1,0) and (0,1) and which do not touch any other points of the form (3k,3k).

Table of values

List of values