cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A132388 Same as A007488, but with the numbers arranged so that their reversals are in increasing order.

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%I A132388 #12 Feb 11 2019 01:28:11
%S A132388 61,691,163,487,4201,9631,4441,1861,4483,5227,1297,5209,9049,63211,
%T A132388 16141,69481,12391,94273,61483,65707,14437,67057,92767,16987,96979,
%U A132388 65899,526501,485701,165901,655111,522211,906421,520621,123031,440131,921931,921241
%N A132388 Same as A007488, but with the numbers arranged so that their reversals are in increasing order.
%H A132388 Nathaniel Johnston, <a href="/A132388/b132388.txt">Table of n, a(n) for n = 1..10000</a>
%H A132388 NCES, <a href="http://nces.ed.gov/nceskids/index.asp">Mind Benders</a> [Source for sequence]
%p A132388 read transforms: A132388ind := proc(n) option remember: local d,k: if(n=1)then return 4: fi: for k from procname(n-1)+1 do d:=digrev(k^2): if(length(k^2)=length(d) and isprime(digrev(k^2)))then return k: fi: od: end: A132388 := proc(n) return digrev(A132388ind(n)^2): end: seq(A132388(n),n=1..50); # _Nathaniel Johnston_, May 06 2011
%Y A132388 Cf. A068989.
%K A132388 nonn,base,easy
%O A132388 1,1
%A A132388 _N. J. A. Sloane_, based on an email from _Jeremy Gardiner_, Nov 12 2007
%E A132388 Better description from _Zak Seidov_, Nov 14 2007