A108865 Numbers n such that the perfect deficiency of n (A109883) is prime.

3, 9, 10, 12, 25, 30, 36, 49, 50, 60, 70, 81, 121, 126, 136, 144, 150, 210, 225, 289, 324, 330, 338, 350, 390, 462, 484, 490, 510, 660, 676, 690, 750, 770, 780, 784, 800, 841, 961, 1058, 1089, 1156, 1190, 1225, 1250, 1380, 1470, 1500, 1610, 1650, 1682, 1750

Offset: 1

Author

Jason Earls, Jul 12 2005

Keywords

• easy
• nonn

Comments

Consecutive terms are 9,10 and 49,50. Are there any more?