30168

Appears in sequences

• Decimal part of a(n)^(1/3) starts with reversal of its integer part: first term of runs.at n=29A034309
• Triangle T(n,k) (0<= k <=n) read by rows. Left edge is 1, 0, 0, ... Otherwise each entry is sum of entry to left, entries immediately above it to left and right and entry directly above it 2 rows back.at n=51A059283
• Starting numbers for which the RATS sequence has eventual period 3.at n=12A114613
• Arises in enumerating non-degenerate colorings in Brook's Theorem.at n=11A152390
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically.at n=47A207938
• Number of 3 X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically.at n=7A207939
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 0 and 1 0 1 vertically.at n=47A208698
• Antidiagonal sums of the convolution array A213774.at n=13A213776
• Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically.at n=8A258521
• Number of cells in regular n-gon after 2 generations of mitosis.at n=21A349807
• Array read by antidiagonals: A(n,k) is the number of sensed planar maps with n vertices and k faces including one distinguished outside face, n >= 1, k >= 1.at n=41A380240