A019468 (n-2)-th Catalan number is congruent to 2n/3 mod n.

9, 12, 15, 27, 30, 33, 81, 84, 87, 117, 120, 123, 243, 246, 249, 279, 282, 285, 333, 336, 339, 351, 354, 357, 729, 732, 735, 765, 768, 771, 819, 822, 825, 837, 840, 843, 981, 984, 987, 999, 1002, 1005, 1053, 1056, 1059, 1089, 1092, 1095, 2187

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Crossrefs

Sequence in context: A263674 A337701 A048699 * A084799 A166136 A120154

Adjacent sequences: A019465 A019466 A019467 * A019469 A019470 A019471

Keyword

nonn

Author

Wouter Meeussen

Status

approved