A159979 Lodumo_3 of Catalan numbers .

1, 4, 2, 5, 8, 0, 3, 6, 11, 14, 17, 7, 10, 13, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 20, 23, 26, 16, 19, 22, 45, 48, 51, 25, 28, 31, 29, 32, 35, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105, 108, 111, 114, 117, 120, 123, 126, 129

Offset: 0

Author

Philippe Deléham, Apr 28 2009

Keywords

• easy
• nonn

Comments

Permutation of nonnegative integers.

Crossrefs

Cf. A000108, A039969

Formula

a(n)=lod_3(A000108(n)).

Extensions

99 inserted by R. J. Mathar, Apr 30 2009