20756

Appears in sequences

• Sum of the first n twin prime pairs.at n=32A086169
• Number of regions formed inside square by diagonals and the segments joining the vertices to the points dividing the sides into n equal length segments.at n=34A108914
• Triangle read by rows, a generalization of the Eulerian numbers based on Nielsen's generalized polylogarithm (case m = 2).at n=33A142249
• 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, 0), (-1, -1, 1), (-1, 1, 0), (0, 1, 1), (1, 0, -1)}.at n=10A148441
• Number of binary strings of length n with equal numbers of 00001 and 11000 substrings.at n=15A164208
• Number of (n+1)X(6+1) 0..2 arrays with the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=7A237635
• Number of partitions of n with difference -2 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=45A242690
• Expansion of Product_{k>=1} 1/(1-x^(k+2))^k.at n=27A263358
• Column 4 of A142249.at n=4A293562