A144296 Records in A144294.

3, 5, 7, 13, 17, 19, 31, 41, 43, 47, 53, 71, 79, 89, 103, 127, 131, 137

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Prog

(PARI) f(n)=my(k=n+(sqrtint(4*n)+1)\2); forprime(p=2, , if(!issquare(Mod(k, p)), return(p))); \\ A144294
lista(nn) = {my(v=vector(nn, n, f(n))); my(m=0, nm=0); for (n=1, nn, nm = v[n]; if (nm > m, print1(nm, ", "); m = nm; ); ); } \\ Michel Marcus, Jun 25 2021

Crossrefs

Cf. A144294, A144295.

Sequence in context: A321363 A355853 A155045 * A045399 A122834 A174265

Adjacent sequences: A144293 A144294 A144295 * A144297 A144298 A144299

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 03 2008

Extensions

a(9)-a(12) from R. J. Mathar, Dec 04 2008

a(13)-a(15) from Michel Marcus, Jun 25 2021

a(16)-a(18) from Michael S. Branicky, Sep 30 2024

Status

approved