A227197 Integers k for which the first non-one value of Kronecker symbols K(1,k), K(2,k), ..., K(u,k) is 0, not -1.

2, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 22, 24, 25, 26, 28, 30, 32, 33, 34, 36, 38, 39, 40, 42, 44, 46, 48, 49, 50, 52, 54, 56, 57, 58, 60, 62, 63, 64, 66, 68, 70, 72, 74, 76, 78, 80, 81, 82, 84, 86, 87, 88, 90, 92, 94, 95, 96, 98, 100, 102, 104, 105, 106

Offset: 1

Author

Antti Karttunen, Jul 06 2013

Keywords

• nonn

Comments

Contains all even numbers >= 2. A227198 gives the odd terms.

Gives all k such that A020639(k) = A227196(k).

Crossrefs

Cf. A227196, A227198.

Programs

PARI

A227196(n) = for(k=1,n,if(kronecker(k,n)<1,return(k)))
for(n=2,500,if((0==kronecker(A227196(n),n)),print1(n,", ")))