1839600

Appears in sequences

• Triangle generated by e.g.f.: A(x,y) = exp(x + y*(x^2+x^3)), read by rows of length [n/2+1].at n=33A118588
• Number of permutations of 1..n with the sequence of sums of 4 adjacent elements having exactly 2 maxima.at n=5A179721
• Number of (n+2) X (1+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001111.at n=16A260363