A114390 a(n) = A065621(n^2).

1, 4, 25, 16, 41, 100, 81, 64, 241, 164, 137, 400, 505, 324, 289, 256, 865, 964, 953, 656, 713, 548, 1585, 1600, 1681, 2020, 1897, 1296, 1497, 1156, 1089, 1024, 3265, 3460, 3417, 3856, 4073, 3812, 3601, 2624, 2993, 2852, 2377, 2192, 2105, 6340

Offset

1,2

Links

Table of n, a(n) for n=1..46.

Formula

a(n) = A065621(A000290(n)).

Prog

(Python)
def A114390(n): return (m:=n**2)^ (m&~-m)<<1 # Chai Wah Wu, Jun 29 2022

Crossrefs

Cf. A000290, A065621.

A114391 gives the positions where a(n) is square, A114392 gives the corresponding values (squares) and A114393 gives their square roots.

Sequence in context: A051514 A103363 A111446 * A114392 A281471 A107734

Adjacent sequences: A114387 A114388 A114389 * A114391 A114392 A114393

Keyword

nonn

Author

Antti Karttunen, Feb 07 2006

Status

approved