A177414 Partial sums of A001334.

1, 7, 37, 175, 793, 3523, 15469, 67351, 291481, 1255615, 5388781, 23057719, 98412925, 419147611, 1781938861, 7563704443, 32061034765, 135735002647, 574031742241, 2425263118615, 10237702739293, 43181995295227, 182007967348273

Offset

0,2

Comments

Number of self-avoiding walks of no more than n-steps on hexagonal [ =triangular ] lattice.

Links

Table of n, a(n) for n=0..22.

Formula

a(n) = Sum_{i=0..n} A001334(i).

Crossrefs

Cf. A001334.

Sequence in context: A208737 A005061 A099454 * A125317 A006419 A277178

Adjacent sequences: A177411 A177412 A177413 * A177415 A177416 A177417

Keyword

nonn,walk

Author

Jonathan Vos Post, Dec 10 2010

Extensions

a(19) corrected by Georg Fischer, Aug 29 2020

Status

approved