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A291334 Numbers with two or more digits such that every two consecutive digits are a square. 0
16, 25, 36, 49, 64, 81, 164, 364, 649, 816, 1649, 3649, 8164, 81649 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The largest number in this sequence (81649) is the only prime in the sequence.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

164 is in this sequence because 16 and 64 are both squares.

PROG

(PARI) is(n)=if(n<16, return(0)); while(n>9, if(!issquare(n%100), return(0)); n\=10); 1 \\ Charles R Greathouse IV, Aug 23 2017

CROSSREFS

Sequence in context: A245371 A235717 A319388 * A175689 A030666 A030676

Adjacent sequences:  A291331 A291332 A291333 * A291335 A291336 A291337

KEYWORD

base,fini,full,nonn,easy

AUTHOR

Bobby Jacobs, Aug 22 2017

STATUS

approved

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Last modified May 18 23:41 EDT 2021. Contains 344009 sequences. (Running on oeis4.)