2,1

Table of n, a(n) for n=2..12.

Elmar Teufl and Stephan Wagner, Exact and asymptotic enumeration of perfect matchings in self-similar graphs, Discrete Mathematics 309(23-24) (2009), 6612-6625; see Table 1 (p. 6619).

Cf. A324126.

Sequence in context: A008332 A065390 A171835 * A212293 A194102 A006317

Adjacent sequences: A324122 A324123 A324124 * A324126 A324127 A324128

nonn,more

N. J. A. Sloane, Feb 16 2019

approved