Numbers k that, when expressed in base 5 and then interpreted in base 7, give a multiple of k.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =3640a(6) =7863a(7) =7894a(8) =8186a(9) =11830a(10) =18200a(11) =39315a(12) =39470a(13) =40930a(14) =59150a(15) =2521602a(16) =3278326a(17) =4167678a(18) =13196470a(19) =17870857a(20) =17992485a(21) =20838390a(22) =36724952a(23) =58516102a(24) =73231902a(25) =89354285a(26) =89962425a(27) =105564531a(28) =200046408a(29) =301764432