1,9
Table of n, a(n) for n=1..13.
Jens M. Schmidt, Data files in graph6 format
Column k=7 of A263296.
Cf. A052447, A007146.
Sequence in context: A224018 A198278 A202990 * A202989 A251361 A260025
Adjacent sequences: A324093 A324094 A324095 * A324097 A324098 A324099
nonn,more
Jens M. Schmidt, Feb 18 2019
approved