A301857 The lesser of j,k, the smallest pair such that A023900(j) + A023900(k) = 0 and j,k are coprime.

1, 13, 37, 41, 61, 73, 89, 97, 109, 113, 185, 157, 181, 193, 233, 241, 277, 281, 323, 313, 337, 349, 353, 403, 397, 401, 409, 421, 433, 449, 457, 461, 527, 551, 521, 541, 577, 593, 601, 613, 617, 641, 661, 673, 701, 779, 733, 757, 761, 769, 959, 821, 829, 899, 877, 881, 929, 937, 953, 997, 1009, 1013, 1021, 1033, 1049

Offset: 1

Author

Torlach Rush, Mar 27 2018

Keywords

• nonn

Comments

a(11) is the first term where neither j or k is prime.

A301591 is contained in this sequence.

Examples

			1 is a term since A023900(1) + A023900(2) = 0 and gcd(1,2) = 1.
185 is a term since A023900(185) + A023900(273) = 0 and gcd(185,273) = 1.
		

Crossrefs

Cf. A023900, A301591, A301374.