A336401 a(n) = a(n-1) concatenated with the smallest number k, such that a(n) is divisible by lcm(1..n).

1, 10, 102, 1020, 10200, 102000, 102000360, 1020003600, 10200036001680, 102000360016800, 10200036001680035280, 102000360016800352800, 102000360016800352800332640, 1020003600168003528003326400

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Prog

(PARI) a(n)={if(n==1, return(1)); for(n1=0, oo, k=eval(concat(Str(a(n-1)), n1)); n2=0; for(n3=1, n, if(k%n3==0, n2+=1; if(n2==n, return(k)))))};

Crossrefs

Cf. A045874, A078282, A078283, A214437, A336399.

Sequence in context: A045874 A214437 A078282 * A037503 A037680 A038378

Adjacent sequences: A336398 A336399 A336400 * A336402 A336403 A336404

Keyword

base,nonn

Author

Eder Vanzei, Jul 20 2020

Status

approved