99323

Appears in sequences

• G.f.: x*(1+x+x^2)*(1+6*x+8*x^2+4*x^3-x^4)/((1+x)^2*(1-x)^4).at n=36A147691
• Numbers k such that k and k+1 have the same sum of powerful divisors (A183097) and this sum is larger than 1.at n=27A349063