20492

Appears in sequences

• Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition).at n=8A121070
• Number of nX3 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.at n=26A166781
• Numbers n for which A222085(n)=A222085(n+1).at n=20A222088
• Number of pairs (lambda,mu) of partitions lambda of n and mu of three with mu <= lambda (by diagram containment).at n=28A303853
• Regular triangle where T(n,k) is the number of non-isomorphic multiset partitions of weight n with k connected components.at n=57A321194
• Even composite integers m such that A004254(m)^2 == 1 (mod m).at n=32A338314