48312

Appears in sequences

• A triangle related to rooted trees.at n=25A060694
• Reversible Lynch-Bell numbers.at n=27A117954
• Numbers k such that both k and k^2/2 are averages of twin prime pairs.at n=29A152787
• Triangle read by rows: T(n,k) is the number of non-derangement permutations of {1,2,...,n} having genus k (see first comment for definition of genus).at n=39A178517
• Number of (w,x,y) with all terms in {0,...,n} and w != max(|w-x|,|x-y|,|y-w|).at n=36A213498
• Number of partitions p of n such that median(p) <= multiplicity(min(p)).at n=44A240213
• Number of ascent sequences of length n with exactly seven flat steps.at n=5A242160
• Coefficients in q-expansion of (E_4^2 - E_2*E_6)/1008, where E_2, E_4, E_6 are the Eisenstein series shown in A006352, A004009, A013973, respectively.at n=6A282050
• Coefficients in q-expansion of E_4^2*E_6^3, where E_4 and E_6 are respectively the Eisenstein series A004009 and A013973.at n=2A282357
• Integers k such that there exists an integer 0<m<k such that (1/sigma(m)^2 + 1/sigma(k)^2)*(m+k)^2 = 1.at n=12A383964
• Primitive terms of A388022: numbers k that satisfy sigma(k) AND 3*k = 3*k, but none of whose proper divisors satisfy the same condition.at n=14A388025