682018

Appears in sequences

• The number of degree sequences with degree sum 2n representable by a connected graph (with multiple edges allowed).at n=28A147878
• Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=5A240457
• T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.at n=33A240460