322335

Appears in sequences

• Numbers k such that sigma(k+1) = 5*phi(k).at n=23A067263
• The Wiener index of the ortho-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=28A216108
• Expansion of Product_{k>=1} ((1 + k*x^k) / (1 + x^k)).at n=36A268500
• Numbers k such that k and k+1 both have an odd number of abundant divisors.at n=20A381548