|
| |
|
|
A089652
|
|
Partial sums, modulo 4, of the sequence : a(1)=1, a(1), a(1), a(1), a(1), a(2), a(2), a(2), a(2), a(3), a(3), a(3), a(3), a(4), ...each terms (not a(1)) repeated 4 times.
|
|
0
| |
|
|
1, 2, 3, 0, 1, 3, 1, 3, 1, 0, 3, 2, 1, 1, 1, 1, 1, 2, 3, 0, 1, 0, 3, 2, 1, 2, 3, 0, 1, 0, 3, 2, 1, 2, 3, 0, 1, 1, 1, 1, 1, 0, 3, 2, 1, 3, 1, 3, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 3, 1, 3, 1, 0, 3, 2, 1, 1, 1, 1, 1, 2, 3, 0, 1, 1, 1, 1, 1, 0, 3, 2, 1, 3, 1, 3, 1, 2, 3, 0, 1, 3, 1, 3, 1
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
FORMULA
| A fixed point of the mapping 1->1230, 2->1313, 3->1032, 0->1111.
|
|
|
MATHEMATICA
| Nest[ Function[ l, {Flatten[(l /. {0 -> {1, 1, 1, 1}, 1 -> {1, 2, 3, 0}, 2 -> {1, 3, 1, 3}, 3 -> {1, 0, 3, 2}})] }], {1}, 4] (from Robert G. Wilson v Mar 04 2005)
|
|
|
CROSSREFS
| Sequence in context: A170899 A179392 A106730 * A112168 A072516 A191588
Adjacent sequences: A089649 A089650 A089651 * A089653 A089654 A089655
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| DELEHAM Philippe (kolotoko(AT)wanadoo.fr), Jan 02 2004
|
|
|
EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 4 2005
|
| |
|
|
