Pairs (x, y), x < y, of f-amicable numbers where f(k) = floor(|k*sin(k)|) sorted by increasing y, then increasing x; f-amicable numbers are defined in A066511.

A066573

Pairs (x, y), x < y, of f-amicable numbers where f(k) = floor(|k*sin(k)|) sorted by increasing y, then increasing x; f-amicable numbers are defined in A066511.

Terms

    a(0) =1a(1) =3a(2) =22a(3) =223a(4) =283a(5) =355a(6) =22a(7) =421a(8) =389a(9) =1065a(10) =365a(11) =1508a(12) =2130a(13) =3079a(14) =1065a(15) =69203a(16) =51872a(17) =127539a(18) =83282a(19) =128604a(20) =152628a(21) =252271a(22) =191963a(23) =295294a(24) =130252a(25) =459590a(26) =717615a(27) =1401314a(28) =2840a(29) =7189717

External references