132480

Appears in sequences

• Numbers k such that sigma(k) - usigma(k) is a square and sets a new record for such squares.at n=33A063840
• Expansion of e.g.f. 1/(1-2*log(1+x)).at n=7A088501
• G.f. satisfies: A(x) = 1 + x*[d/dx x*A(x)^3]/A(x)^4.at n=8A218168
• Consider numbers n = concat(w,x,y,z) such that w*x*y*z | n. Leading zeros in x, y and z allowed. Sequence lists numbers that admit at least two such concatenations.at n=24A257172
• Triangle read by rows: T(n,k) is the number of c-nets with n-k inner vertices and k outer vertices, 3 <= n, 2 <= k <= n-1.at n=51A285165
• Column 8 of A285165.at n=3A285171
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - k*log(1 + x)).at n=52A320080
• Number of n element multisets of the 12th roots of unity with zero sum.at n=31A321417
• First elements of maximal isospectral chains of length 3.at n=18A335082
• Numbers k such that k is a multiple of A005940(k).at n=56A364546