143370

Appears in sequences

• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives z numbers.at n=25A125492
• Expansion of psi(x^4) / chi(-x)^2 in powers of x where psi(), chi() are Ramanujan theta functions.at n=39A260599
• Numbers k whose nearest neighbors have the same number of divisors, the same number of distinct prime factors, and the same sum of divisors.at n=16A294173
• The smallest nonpalindromic number in base n that shares the same prime divisors as its digit reversal in base n.at n=56A371307