A337054 Numbers that have at least 3 different representations as the product of a number and of its decimal digits.

0, 549504, 1798848, 4193856, 4804128, 5827584, 7426944, 14397696, 34324992, 39401250, 39611040, 42856128, 45312750, 62593440, 81575424, 86171040, 92348928, 140184576, 151600896, 196475328, 221695488, 251584704, 263680704, 271165104, 287945280, 475388928, 499654656

Offset

1,2

Comments

Subsequence of A336944. a(2) and a(43) both have 4 representations. The term 1461825635235840 = 696266592*(6*9*6*2*6*6*5*9*2) = 72511192224*(7*2*5*1*1*1*9*2*2*2*4) = 5371199424*(5*3*7*1*1*9*9*4*2*4) = 7161599232*(7*1*6*1*5*9*9*2*3*2) = 1193599872*(1*1*9*3*5*9*9*8*7*2) has 5 representations.

Links

Chai Wah Wu, Table of n, a(n) for n = 1..11157

Example

a(43) = 1578092544 = 342468*(3*4*2*4*6*8) = 913248*(9*1*3*2*4*8) = 97848*(9*7*8*4*8) = 86976*(8*6*9*7*6).

Crossrefs

Cf. A098736, A336826, A336876, A336944, A337051.

Sequence in context: A237729 A251035 A236827 * A337100 A077456 A188486

Adjacent sequences: A337051 A337052 A337053 * A337055 A337056 A337057

Keyword

nonn,base

Author

Chai Wah Wu, Aug 12 2020

Status

approved