Numbers k such that A380845(k) = 3*k.

Terms

a(0) =1800a(1) =3720a(2) =7560a(3) =15240a(4) =20832a(5) =30600a(6) =42336a(7) =61320a(8) =85344a(9) =109320a(10) =116040a(11) =122760a(12) =171360a(13) =218760a(14) =238920a(15) =245640a(16) =343392a(17) =346440a(18) =395880a(19) =437640a(20) =462600a(21) =484680a(22) =491400a(23) =580680a(24) =687456a(25) =854760a(26) =875400a(27) =896520a(28) =917880a(29) =925320