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A048443 Concatenation of first n numbers in base 12. 16
1, 14, 171, 2056, 24677, 296130, 3553567, 42642812, 511713753, 6140565046, 73686780563, 10610896401084, 1527969081756109, 220027547772879710, 31683966879294678255, 4562491230618433668736, 656998737209054448298001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..200

EXAMPLE

a(12) = 1 2 3 4 5 6 7 8 9 A B 10 = 10610896401084

MATHEMATICA

If[STARTPOINT==1, n={}, n=Flatten[IntegerDigits[Range[STARTPOINT-1], 12]]]; Table[AppendTo[n, IntegerDigits[w, 12]]; n=Flatten[n]; FromDigits[n, 12], {w, STARTPOINT, ENDPOINT}] [Dylan Hamilton, Aug 11 2010]

f[n_]:= FromDigits[Flatten@IntegerDigits[Range@n, 12], 12]; Array[f, 20] (* Vincenzo Librandi, Dec 30 2012 *)

PROG

(MAGMA) [n eq 1 select 1 else Self(n-1)*12^(1+Ilog(12, n))+n: n in [1..20]]; // Vincenzo Librandi, Dec 30 2012

CROSSREFS

Cf. A014882.

Concatenation of first n numbers in other bases: 2: A047778, 3: A048435, 4: A048436, 5: A048437, 6: A048438, 7: A048439, 8: A048440, 9: A048441, 10: A007908, 11: A048442, 12: this sequence, 13: A048444, 14: A048445, 15: A048446, 16: A048447.

Sequence in context: A254811 A099158 A014882 * A191690 A016136 A277940

Adjacent sequences:  A048440 A048441 A048442 * A048444 A048445 A048446

KEYWORD

nonn,base,easy

AUTHOR

Patrick De Geest, May 15 1999.

STATUS

approved

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Last modified July 21 17:51 EDT 2017. Contains 289643 sequences.