A292939 Odd numbers k such that A292270((k-1)/2) is a square.

1, 3, 5, 7, 11, 13, 15, 19, 27, 29, 31, 37, 53, 59, 61, 63, 67, 83, 95, 101, 107, 127, 131, 139, 149, 163, 173, 179, 181, 197, 211, 227, 255, 269, 277, 293, 305, 317, 347, 349, 373, 379, 389, 419, 421, 443, 461, 467, 491, 509, 511, 519, 523, 541, 547, 557, 563, 587, 613, 619, 653, 659, 661, 677, 701, 709, 757, 773

Offset: 1

Author

Antti Karttunen and Vladimir Shevelev, Oct 06 2017

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..1001

Crossrefs

Union of A000225 and A292940.

Cf. A001122, A292379 (subsequences).

Cf. also A292270, A292938.

Formula

a(n) = 1 + 2*A292938(n).