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

Author

Patrick De Geest, May 15 1998

Keywords

• nonn
• base

References

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

Links

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

Crossrefs

Cf. A014569.

Programs

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 *)