Concatenation of first 3 digits and last 3 digits of n-th perfect number.

Terms

a(0) =66a(1) =2828a(2) =496496a(3) =812128a(4) =335336a(5) =858056a(6) =137328a(7) =230128a(8) =265176a(9) =191216a(10) =131128a(11) =144128a(12) =235976a(13) =141128a(14) =541328a(15) =108528a(16) =994776a(17) =335056a(18) =182536a(19) =407528a(20) =114216a(21) =598576a(22) =395336a(23) =931656a(24) =100376a(25) =811816a(26) =365456a(27) =144528a(28) =136528a(29) =131016