A152669 Last digit of Catalan number A000108(n).

1, 1, 2, 5, 4, 2, 2, 9, 0, 2, 6, 6, 2, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 4, 2, 2, 4, 0, 8, 4, 9, 8, 0, 4, 2, 2, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 6, 2, 0, 4, 2, 2, 4, 0, 2, 6, 6, 2, 5, 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

Author

Omar E. Pol, Dec 10 2008

Keywords

• base
• easy
• nonn

Comments

Catalan numbers read modulo 10. - Philippe Deléham, Apr 28 2009

Links

• Amiram Eldar, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A000108.

Programs

Mathematica

Mod[CatalanNumber[Range[0,100]],10] (* Harvey P. Dale, Apr 07 2015 *)

Formula

a(n)= A000108(n) mod 10. - Philippe Deléham, Apr 28 2009