Numbers n such that sigma(n) - n - 1 = pi(n).

Terms

a(0) =4a(1) =55a(2) =65a(3) =95a(4) =125a(5) =145a(6) =155a(7) =185a(8) =205a(9) =2779a(10) =2863a(11) =55297a(12) =174691a(13) =174779a(14) =487903a(15) =1301989a(16) =1302457a(17) =5254751a(18) =6383483a(19) =23140961a(20) =48267437a(21) =59651051a(22) =70111213a(23) =70111247a(24) =92514491a(25) =199445641a(26) =212210443a(27) =514269523a(28) =514269599a(29) =21881358361