A062372 Numbers the product of whose nonzero digits is a cube.

1, 8, 10, 11, 18, 24, 39, 42, 80, 81, 88, 93, 100, 101, 108, 110, 111, 118, 124, 139, 142, 180, 181, 188, 193, 204, 214, 222, 240, 241, 248, 284, 309, 319, 333, 389, 390, 391, 398, 402, 412, 420, 421, 428, 444, 469, 482, 496, 555, 649, 666, 694, 777, 800, 801

Offset

1,2

Links

Harry J. Smith, Table of n, a(n) for n = 1..1000

Example

142 is a member as 1*4*2 = 8 is a cube. 180 is also a member as 1*8 = 8.

Prog

(PARI) ok(k)={my(d=digits(k)); ispower(prod(i=1, #d, if(d[i], d[i], 1)), 3)} \\ Andrew Howroyd, Jun 29 2018

Crossrefs

Cf. A062371.

Sequence in context: A274560 A122990 A288107 * A374349 A046031 A102758

Adjacent sequences: A062369 A062370 A062371 * A062373 A062374 A062375

Keyword

nonn,base,easy

Author

Amarnath Murthy, Jun 26 2001

Extensions

Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jul 06 2001

Offset changed by Andrew Howroyd, Sep 17 2024

Status

approved