A133259 a(6n) = 6n+1, a(6n+1) = 6n+2, a(6n+2) = 6n+3, a(6n+3) = 6n+6, a(6n+4) = 6n+5, a(6n+5) = 6n+4.

1, 2, 3, 6, 5, 4, 7, 8, 9, 12, 11, 10, 13, 14, 15, 18, 17, 16, 19, 20, 21, 24, 23, 22, 25, 26, 27, 30, 29, 28, 31, 32, 33, 36, 35, 34, 37, 38, 39, 42, 41, 40, 43, 44, 45, 48, 47, 46, 49, 50, 51, 54, 53, 52, 55, 56, 57, 60, 59, 58, 61, 62, 63, 66, 65, 64, 67, 68, 69, 72, 71, 70

Offset: 0

Author

Paul Curtz, Oct 15 2007

Keywords

• nonn
• easy

Links

• Index entries for linear recurrences with constant coefficients, signature (2, -2, 2, -2, 2, -1).

Programs

Mathematica

Table[6n+{1,2,3,6,5,4},{n,0,20}]//Flatten (* Harvey P. Dale, Sep 30 2016 *)