A302408 Number of n step self-avoiding walks on 3 X infinity grid starting from (0,0).

1, 3, 7, 18, 40, 86, 170, 350, 688, 1394, 2702, 5338, 10278, 20078, 38578, 74820, 143496, 276890, 530626, 1020774, 1955400, 3754560, 7190520, 13790666, 26407852, 50612412, 96911566, 185660272, 355485362, 680860212, 1303623528, 2496462996

Offset

0,2

Links

Sean A. Irvine, Table of n, a(n) for n = 0..39

Crossrefs

Cf. A007825 (starting from (0,1)), A038577, A001411.

Sequence in context: A197182 A074587 A208715 * A076700 A265007 A026533

Adjacent sequences: A302405 A302406 A302407 * A302409 A302410 A302411

Keyword

nonn,walk

Author

Sean A. Irvine, Apr 07 2018

Status

approved