A227305 Numbers n such that sigma(n) - sigma(n-1) divides n.

2, 3, 5, 6, 10, 19, 52, 118, 1054, 3201, 8586, 9802, 16120, 60556, 140698, 145216, 11273536, 29886160, 44868748, 8748377956, 325377469696, 2368739714188

Offset: 1

Author

Alex Ratushnyak, Jul 05 2013

Keywords

• nonn
• more

Comments

a(23) > 2.5*10^12. - Giovanni Resta, Jul 13 2013

Crossrefs

Cf. A053222, A067816, A223138, A225211.

Extensions

a(21)-a(22) from Giovanni Resta, Jul 13 2013