74200
domain: N
Appears in sequences
- Sum_(x^i*y^j*z^k) with i + j + k = m and (x, y, z) = the primitive Pythagorean triple (7, 24, 25).at n=3A124101
- a(n) = [x^n/n!] 1 - (1-x)^(1/(1 + n*log(1-x))).at n=4A203039
- Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|<|y-z|.at n=20A212681
- Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = psi(n) - n and psi(n) = A001615(n) is the Dedekind psi function.at n=28A323329
- Number of partitions of n in which exactly one even part is repeated and odd parts are unrestricted.at n=47A353902
- Number of losing integer partitions of n in the impartial combinatorial game LCTR (left column, top row).at n=48A373457