31936

Appears in sequences

• Number of 3 X 3 matrices with elements from [0,...,(n-1)] satisfying the condition that the middle element of each row or column is the difference of the two end elements (in absolute value).at n=15A058333
• Triangle T(n, k) is coefficient of z^n*w^k in 1/(1 - 2*z - 2*w - 2*z*w) read by rows in order 00, 10, 01, 20, 11, 02, ...at n=39A059473
• Triangle T(n, k) is coefficient of z^n*w^k in 1/(1 - 2*z - 2*w - 2*z*w) read by rows in order 00, 10, 01, 20, 11, 02, ...at n=41A059473
• Number of binary words of length n containing at least one subword 10^{9}1 and no subwords 10^{i}1 with i<9.at n=58A143289
• Number of 2 X 2 nonsingular 0..n matrices with rows in increasing order.at n=14A183761
• Arises in enumerating Huffman codes, compact trees, and sums of unit fractions.at n=17A194630
• Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01.at n=2A251266
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01.at n=30A251268
• Number of (3+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01.at n=5A251270
• a(n) = 2*n*(16*n - 13).at n=32A263228
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(k*((1+x)^k - 1)).at n=42A294118
• Expansion of e.g.f.: exp(2*((1+x)^2 - 1)).at n=6A294119