A260017 Triangle read by rows giving certain self-avoiding walk data for the triangular lattice.

6, 30, 12, 138, 48, 24, 618, 180, 84, 60, 2730, 792, 264, 192, 180, 11946, 3444, 1128, 528, 552, 588

Offset

1,1

Comments

See Redner (1980) for precise definition.

Links

Table of n, a(n) for n=1..21.

S. Redner, Distribution functions in the interior of polymer chains, J. Phys. A 13 (1980), 3525-3541, doi:10.1088/0305-4470/13/11/023.

Example

Triangle begins:
6,
30,12,
138,48,24,
618,180,84,60,
2730,792,264,192,180,
11946,3444,1128,528,552,588,
...

Crossrefs

Diagonals include A001334, A007200, A007201.

Sequence in context: A165734 A367665 A309253 * A375287 A351773 A123624

Adjacent sequences: A260014 A260015 A260016 * A260018 A260019 A260020

Keyword

nonn,tabl,more

Author

N. J. A. Sloane, Jul 13 2015

Status

approved