Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).

A117350

Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).

Terms

    a(0) =70a(1) =110a(2) =120a(3) =650a(4) =672a(5) =884a(6) =1155a(7) =4030a(8) =5830a(9) =8925a(10) =11096a(11) =17816a(12) =18632a(13) =18904a(14) =30240a(15) =32445a(16) =32760a(17) =45356a(18) =70564a(19) =77744a(20) =85936a(21) =91388a(22) =100804a(23) =116624a(24) =244036a(25) =254012a(26) =388076a(27) =391612a(28) =430272a(29) =442365

External references