A259815 - OEIS

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A259815

Total length of self-avoiding walks with n bonds on the square lattice with additional bridges of length sqrt(2).

0

4, 16, 68, 232, 796, 2528, 8036, 24520, 74796, 222400, 660868, 1929944, 5631748, 16228768, 46730860, 133288872, 379917092, 1074853312, 3039122932, 8541661232, 23994293596, 67070070848, 187391828604

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..23.

A. J. Guttmann and Y. S. Yang, The shortest path of SAWs with bridges, Journal of Physics A: Mathematical and General 24.7 (1991): 1603-1609.

CROSSREFS

Sequence in context: A270765 A292759 A351049 * A283036 A307051 A158761

Adjacent sequences: A259812 A259813 A259814 * A259816 A259817 A259818

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 08 2015

STATUS

approved