Least k>1 such that first n terms of A022303 repeat beginning at k-th term.

Terms

a(0) =3a(1) =3a(2) =10a(3) =19a(4) =19a(5) =19a(6) =28a(7) =28a(8) =28a(9) =28a(10) =28a(11) =28a(12) =55a(13) =55a(14) =82a(15) =82a(16) =82a(17) =82a(18) =82a(19) =82a(20) =82a(21) =82a(22) =82a(23) =82a(24) =460a(25) =460a(26) =460a(27) =460a(28) =460a(29) =460