A159984 Catalan numbers read modulo 5 .

1, 1, 2, 0, 4, 2, 2, 4, 0, 2, 1, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 2, 2, 4, 0, 3, 4, 4, 3, 0, 4, 2, 2, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 2, 0, 4, 2, 2, 4, 0, 2, 1, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,3

Links

Table of n, a(n) for n=0..104.

Formula

a(n)= A000108(n) mod 5 .

Mathematica

Mod[CatalanNumber[Range[0, 110]], 5] (* Harvey P. Dale, Nov 18 2014 *)

Crossrefs

Sequence in context: A324239 A274706 A037035 * A240697 A271230 A112824

Adjacent sequences: A159981 A159982 A159983 * A159985 A159986 A159987

Keyword

easy,nonn

Author

Philippe Deléham, Apr 28 2009

Extensions

Corrected and extended by Philippe Deléham, Sep 09 2009

Status

approved