A032751 Palindromic Super-3 Numbers.

4554, 6776, 17471, 22322, 22722, 28182, 43434, 48084, 57675, 60606, 62526, 85558, 89298, 98389, 154451, 174471, 328823, 453354, 513315, 647746, 741147, 761167, 855558, 958859, 962269, 1006001, 1036301, 1151511, 1169611, 1177711

Offset

1,1

References

C. A. Pickover, "Keys to Infinity", New York: Wiley, p. 7, 1995.

Links

Table of n, a(n) for n=1..30.

Eric Weisstein's World of Mathematics, Super-d Number.

Mathematica

stp3Q[n_]:=Module[{idn=IntegerDigits[n], id3=IntegerDigits[3n^3]}, MemberQ[ Partition[ id3, 3, 1], {3, 3, 3}]&&idn==Reverse[idn]]; Select[Range[ 1200000], stp3Q] (* Harvey P. Dale, Jan 16 2013 *)

Crossrefs

Cf. A014569.

Sequence in context: A186471 A210305 A102748 * A020436 A104947 A030471

Adjacent sequences: A032748 A032749 A032750 * A032752 A032753 A032754

Keyword

nonn,base

Author

Patrick De Geest, May 15 1998

Status

approved