cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A048348 a(n)^2 is the smallest square containing exactly n 3's.

Original entry on oeis.org

6, 56, 586, 1156, 11547, 57735, 559769, 1197219, 6582806, 36514844, 350903624, 1798230611, 1825769244, 48304278624, 11547014044, 577333277556, 1527394295306, 6582576498844, 57465931849517, 416333244448889, 581664313273844, 4820096824065156, 18256870415638994, 61913999493598646, 577694870440557344
Offset: 1

Views

Author

Patrick De Geest, Mar 15 1999

Keywords

Links

Crossrefs

Cf. A036510, A034982.

Programs

  • Mathematica
    a[n_] := Block[{k=1}, While[DigitCount[k^2, 10, 3] != n, k++]; k]; Array[a, 6] (* Giovanni Resta, Jul 27 2018 *)

Extensions

More terms from Jon E. Schoenfield, Jan 11 2009
a(18)-a(19) from Giovanni Resta, Jul 27 2018
a(20)-a(25) from Max Alekseyev, Mar 06 2025

A034983 Smallest square starting with a string of n 3's.

Original entry on oeis.org

36, 3364, 3330625, 33339076, 3333330225, 3333330225, 3333333850564, 3333333342690729, 33333333393562596, 33333333334531246864, 3333333333337654632561, 3333333333337654632561, 33333333333330358304074816, 3333333333333382240568995369, 333333333333333605254746019876, 33333333333333337431463834402564, 3333333333333333396736221926480929
Offset: 1

Views

Author

Patrick De Geest, Nov 15 1998

Keywords

Crossrefs

Cf. A034982.

Extensions

More terms from Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 23 2001
Showing 1-2 of 2 results.

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