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A108659 Square-chain primes (including square-loop primes). 3
2, 13, 31, 79, 97, 101, 109, 131, 181, 227, 313, 401, 409, 631, 727, 797, 881, 1009, 1013, 1097, 2797, 3109, 3181, 3631, 4001, 4013, 7901, 8101, 9001, 9013, 10009, 10181, 10909, 10979, 13109, 18131, 18181, 22279, 22727, 27901, 31013, 36313 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes such that each pair of adjacent digits sums up to a square. First term is a square-loop prime, cf. A108660.

LINKS

Table of n, a(n) for n=1..42.

CROSSREFS

Cf. A046704, A007953, A088133, A088134, A088135, A088136, A108660.

Sequence in context: A031392 A156980 A158720 * A086924 A108660 A107132

Adjacent sequences:  A108656 A108657 A108658 * A108660 A108661 A108662

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Jun 16 2005

STATUS

approved

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Last modified June 16 21:43 EDT 2021. Contains 345080 sequences. (Running on oeis4.)