42788

Appears in sequences

• Number of slanted n X 4 (i=1..n) X (j=i..4+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, 4 in the lower right corner, and with no element having more than 3 neighbors with the same value.at n=11A165381
• G.f. satisfies A(x) = 1 + x^5*A(x)^3 / (1 - x*A(x)).at n=27A365700