Antiharmonic numbers using anti-divisors: numbers n such that sigma*(n) divides sigma*_2(n), where sigma*(n) is the sum of anti-divisors of n and sigma*_2(n) the sum of squares of anti-divisors of n.
A192286
Antiharmonic numbers using anti-divisors: numbers n such that sigma*(n) divides sigma*_2(n), where sigma*(n) is the sum of anti-divisors of n and sigma*_2(n) the sum of squares of anti-divisors of n.
Terms
- a(0) =3a(1) =4a(2) =6a(3) =9a(4) =36a(5) =54a(6) =96a(7) =216a(8) =576a(9) =1212a(10) =1296a(11) =1582a(12) =2171a(13) =3129a(14) =3599a(15) =26847a(16) =45914a(17) =69984a(18) =76393a(19) =91013a(20) =137173a(21) =176678a(22) =182559a(23) =183087a(24) =236196a(25) =393216a(26) =497664a(27) =3823898a(28) =28697814a(29) =31850496
External references
- oeis: A192286