Irregular triangle with 4 columns which contains in each row the members of a 4-cycle under the map x->A063919(x), iteration of summing the proper-unitary divisors.
A098188
Irregular triangle with 4 columns which contains in each row the members of a 4-cycle under the map x->A063919(x), iteration of summing the proper-unitary divisors.
Terms
- a(0) =263820a(1) =263940a(2) =280380a(3) =280500a(4) =395730a(5) =395910a(6) =420570a(7) =420750a(8) =172459210a(9) =218725430a(10) =272130250a(11) =218628662a(12) =209524210a(13) =246667790a(14) =231439570a(15) =230143790a(16) =384121920a(17) =384296640a(18) =408233280a(19) =408408000
External references
- oeis: A098188