A032752 Palindromic Super-4 Numbers.

83338, 1142411, 1571751, 1587851, 2013102, 2081802, 2541452, 3278723, 3394933, 3433343, 3863683, 4684864, 5067605, 5516155, 5985895, 6148416, 6467646, 6771776, 6912196, 7043407, 7136317, 7304037, 7417147, 7605067, 7987897

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..25.

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

Mathematica

Select[Range[80*10^5], PalindromeQ[#]&&SequenceCount[IntegerDigits[4#^4], {4, 4, 4, 4}]>0&] (* Harvey P. Dale, Jan 18 2023 *)

Crossrefs

Cf. A014569, A032744.

Sequence in context: A235097 A125779 A233925 * A104928 A202933 A013885

Adjacent sequences: A032749 A032750 A032751 * A032753 A032754 A032755

Keyword

nonn,base

Author

Patrick De Geest, May 15 1998

Status

approved