A349735 a(n) = A244915(n)^2 + A244915(n+1)^2.

2, 5, 13, 73, 89, 29, 53, 113, 233, 173, 229, 241, 17, 37, 61, 41, 97, 181, 101, 197, 277, 337, 257, 401, 409, 109, 149, 193, 313, 269, 389, 293, 733, 829, 461, 397, 157, 137, 457, 541, 941, 857, 641, 661, 877, 1097, 281, 349, 373, 449, 521, 317, 421, 709, 509

Offset

0,1

Comments

All terms are prime and distinct.

Links

Rémy Sigrist, Table of n, a(n) for n = 0..10000

Example

a(4) = A244915(4)^2 + A244915(5)^2 = 8^2 + 5^2 = 89.

Prog

(PARI) s=0; v=1; for (n=0, 54, for (w=1, oo, p=v^2+w^2; if (!bittest(s, p) && isprime(p), print1(p ", "); s+=2^p; v=w; break)))

Crossrefs

Cf. A244915.

Sequence in context: A262366 A128029 A215167 * A081650 A092262 A365326

Adjacent sequences: A349732 A349733 A349734 * A349736 A349737 A349738

Keyword

nonn,look

Author

Rémy Sigrist, Nov 28 2021

Status

approved