A186146 Rank of n^3 when {i^2: i>=1} and {j^3: j>=1} are jointly ranked with i^2 before j^3 when i^2=j^3. Complement of A186145.

2, 4, 8, 12, 16, 20, 25, 30, 36, 41, 47, 53, 59, 66, 73, 80, 87, 94, 101, 109, 117, 125, 133, 141, 150, 158, 167, 176, 185, 194, 203, 213, 222, 232, 242, 252, 262, 272, 282, 292, 303, 314, 324, 335, 346, 357, 369, 380, 392, 403, 415, 426, 438, 450, 462, 475, 487, 499, 512, 524, 537, 550, 563, 576, 589, 602, 615, 628, 642, 655, 669, 682, 696, 710, 724, 738, 752, 766, 781, 795, 810, 824, 839, 853, 868, 883, 898

Offset

1,1

Comments

See A186145.

Links

Table of n, a(n) for n=1..87.

Formula

a(n) = n+floor((n^3+1/2)^(1/2)).

a(n) = n+floor(n^(3/2)). - Chai Wah Wu, Oct 15 2025

Example

See A186145.

Mathematica

(See A186145.)

Prog

(Python)
from math import isqrt
def A186146(n): return n+isqrt(n**3) # Chai Wah Wu, Oct 15 2025

Crossrefs

Cf. A186145.

Sequence in context: A376616 A160408 A221707 * A375984 A006638 A001212

Adjacent sequences: A186143 A186144 A186145 * A186147 A186148 A186149

Keyword

nonn,easy

Author

Clark Kimberling, Feb 13 2011

Status

approved