21144

Appears in sequences

• a(0) = 1, a(n) = 22*n^2 + 2 for n>0.at n=31A010012
• Row sums of triangle A096744, which shifts one place diagonally left and upward under the matrix cube operation.at n=10A096746
• a(n) = 2*n*a(n-1) - a(n-2), with a(0)=0, a(1)=1.at n=6A106174
• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k ascents of length 2 starting at an odd level (0<=k<=floor(n/2)-1 for n>=2; k=0 for n=0,1).at n=28A114463
• Triangle read by rows: T(n,k) is number of ternary words of length n and having k runs of 0's of odd length (0 <= k <= ceiling(n/2); a run of 0's is a subsequence of consecutive 0's of maximal length).at n=37A119914
• Bond series for second parallel moment of hexagonal net.at n=13A120543
• Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=7A123348
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (0, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=9A149860
• a(n) = 1728*n - 1320.at n=12A157263
• Numbers k that end with ( sum of digits of k )^2.at n=29A270343
• Number of minimal dominating sets in the n-pan graph.at n=28A290273
• Number of circular ternary words of length n having the maximum possible number of distinct blocks of length floor(log_3 n) and floor(log_3 n)+1.at n=14A330307