A078396 a(n) = A078395(n+1)/A078395(n).

21, 153, 1345, 1257, 1204544, 11698111, 114516123, 1126760562, 11124999996, 1011123595468, 109012001333443, 10833955895979437, 1076982819760661072, 107148014373065628394, 10667115902902368632876

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Prog

(PARI) {a=1; for(n=2, 16, k=floor(log(a)/log(10))+1; v=Str(1); for(i=2, n, v=concat(Str(i), v)); s=eval(v); t=s+1; m=floor(log(s)/log(10))+1; d=k-m; s=s*10^d; t=t*10^d; b=1; j=d; while(b>0, q=floor(s/a); while(b>0&&(p=q*a)<t, if(p>=s, print1(q, ", "); b=0, q++)); s=10*s; t=10*t); a=p)}

Crossrefs

Cf. A078296, A078395, A078397.

Sequence in context: A229262 A184376 A184368 * A301883 A302080 A331528

Adjacent sequences: A078393 A078394 A078395 * A078397 A078398 A078399

Keyword

base,nonn

Author

Amarnath Murthy, Nov 26 2002

Extensions

Edited and extended by Klaus Brockhaus, Dec 06 2002

Status

approved