Odd composites k with more than 2 prime factors for which it holds that k = A048720(k/d, A065621(d)), for all divisor pairs (d, k/d), d <= k/d.

A391252

Odd composites k with more than 2 prime factors for which it holds that k = A048720(k/d, A065621(d)), for all divisor pairs (d, k/d), d <= k/d.

Terms

    a(0) =4953a(1) =11049a(2) =319449a(3) =712617a(4) =1136993a(5) =1171313a(6) =1498953a(7) =2200913a(8) =2271841a(9) =2383581a(10) =2776749a(11) =4578769a(12) =4627915a(13) =4742589a(14) =4797273a(15) =5111769a(16) =5496161a(17) =5922093a(18) =6479081a(19) =8739797a(20) =8838089a(21) =9100201a(22) =9755481a(23) =9821009a(24) =9870155a(25) =10050357a(26) =10144329a(27) =11033277a(28) =11057961a(29) =11316873

External references