69360

Appears in sequences

• Number of ways in which n identical balls can be distributed among 5 boxes in a row such that each pair of adjacent boxes contains at least 4 balls.at n=28A005338
• a(n) = n^2*(n-1)*(n-2).at n=15A047929
• McKay-Thompson series of class 30B for the Monster group with a(0) = 0.at n=45A058613
• Number of spanning trees in the line graph of the product of two star graphs, each of order n, L(S_n x S_n).at n=1A066544
• Number of ordered septuples of distinct pairwise coprime positive integers with largest element n.at n=30A186978
• Number of 6-element subsets of {1, 2, ..., n} having pairwise coprime elements.at n=31A186982
• Area A of the bicentric quadrilaterals such that A, the sides, the radius of the circumcircle and the radius of the incircle are integers.at n=5A219192
• Primitive bicentric quadrilaterals defined in A219192.at n=1A219193
• Numbers k for which k = sigma(sigma(x)) = sigma(sigma(y)) for some x and y such that k = x + y.at n=7A229953
• Integer areas of the integer-sided triangles such that the length of the circumradius is a square.at n=25A230479
• Row 4 of array in A265080.at n=15A265081
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 627", based on the 5-celled von Neumann neighborhood.at n=39A273276
• Least k whose set of divisors contains exactly n Pythagorean triples, or 0 if no such k exists.at n=12A334382
• a(n) = Product_{j=1..n, k=1..n} (j^3 + k^3 + n^3).at n=2A368720