A357692 Integers k such that A037278(k) is a term of A175252.

1, 2, 4, 15, 16, 25, 60, 90, 100, 124, 150, 240, 375, 384, 600, 618, 625, 960, 1536, 3330, 3750, 4650, 5760, 10000, 10500, 10752, 15000, 16384, 17500, 24576, 25600, 40000, 49500, 62500, 102400, 139200, 168750, 198400, 323280, 526848, 960000, 1179648, 1248000, 1369125

Offset

1,2

Links

David A. Corneth, Table of n, a(n) for n = 1..81

Example

A037278(4) = 124, a term of A175252.
A037278(15) = 13515, a term of A175252.
A037278(16) = 124816, a term of A175252.
A037278(25) = 1525, a term of A175252.

Prog

(PARI) is(n, {u = 10^5}) = {my(e = eval(concat(concat([""], divisors(n))))); if(e % n != 0, return(0); ); my(oldu = u, s, d); u = min(e, u); s = ""; d = divisors(factor(e, u)); d = select(x -> x <= u, d); for(i = 1, #d, s=concat(s, Str(d[i])); if(eval(s) == e, return(1)); if(eval(s) > e, return(0)); ); is(n, 10*oldu); } \\ David A. Corneth, Oct 10 2022, adapted from Michel Marcus' isok at A175252

Crossrefs

Subsequence of A069872.

Cf. A037278, A175252.

Sequence in context: A304568 A271645 A265483 * A154906 A260299 A080623

Adjacent sequences: A357689 A357690 A357691 * A357693 A357694 A357695

Keyword

nonn,base

Author

Michel Marcus, Oct 10 2022

Extensions

More terms from David A. Corneth, Oct 10 2022

Status

approved