A262688 a(n) = square root of the index where A262680 reaches n for the first time.

0, 1, 2, 13, 18, 39, 354, 355, 652, 1309, 1310, 2227, 4976

Offset: 0

Author

Antti Karttunen, Oct 03 2015

Keywords

• nonn
• more

Comments

Natural numbers whose squares set new records for A262680.

Even and odd terms alternate.

Crossrefs

Cf. A000196, A262680, A262687, A262515.

Programs

PARI

\\ See A262687.

Scheme

(define (A262688 n) (A000196 (A262687 n)))

Formula

a(n) = A000196(A262687(n)).