A068705 a(n) is the concatenation of n, (n-1)^2, (n-2)^3, (n-3)^4, ..., 2^(n-1) and 1.

1, 21, 341, 4981, 51627161, 6256481321, 736125256243641, 84921662510247291281, 96434312963125409621872561, 108151224017776156251638465615121, 111007294096168074665678125655361968310241, 1212110006561327681176492799363906252621445904920481

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Mathematica

Table[FromDigits[Flatten[IntegerDigits[Range[n, 1, -1]^Range[n]]]], {n, 12}] (* Jayanta Basu, May 21 2013 *)

Crossrefs

Sequence in context: A166914 A020311 A295350 * A144864 A295604 A323277

Adjacent sequences: A068702 A068703 A068704 * A068706 A068707 A068708

Keyword

base,easy,nonn

Author

Amarnath Murthy, Mar 04 2002

Status

approved