A036529 Smallest cube containing exactly n 2's.

0, 27, 21952, 2628072, 202262003, 229220928, 22521332224, 21148222722264, 25942222239227, 2272271222935232, 2262268226562252992, 4223937222222326272, 22225347273222227224, 122245292222422449622424, 2732072222242422541222208, 22422524292920620222272827

Offset

0,2

Comments

a(n)^(1/3) = A048367(n) is the index of the first occurrence of n in sequence A269242. - M. F. Hasler, Feb 21 2016

Links

Giovanni Resta, Table of n, a(n) for n = 0..23

Formula

a(n) = A048367(n)^3. - M. F. Hasler, Feb 21 2016

Mathematica

nsmall = Table[Infinity, 20];
For[i = 0, i <= 10^6, i++, n0 = Count[IntegerDigits[i^3], 2];
  If[nsmall[[n0 + 1]] > i^3, nsmall[[n0 + 1]] = i^3]];
Cases[nsmall, _?NumberQ] (* Robert Price, Mar 20 2020 *)

Crossrefs

Cf. A048367, A036527, A036528, A036530, A036531, A036532, A036533, A036534, A036535, A036536.

Sequence in context: A357506 A343692 A201369 * A185882 A278140 A171110

Adjacent sequences: A036526 A036527 A036528 * A036530 A036531 A036532

Keyword

nonn,base

Author

David W. Wilson

Extensions

a(12)-a(15) from Giovanni Resta, Jun 29 2018

Status

approved