A024351 - OEIS

A024351

Primes forming a 3 X 3 magic square with prime entries and minimal constant 177 = A164843(3).

5, 17, 29, 47, 59, 71, 89, 101, 113

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OFFSET

1,1

COMMENTS

The minimal 3 X 3 magic square made of consecutive primes has constant 4440084513 = A073520(3) = A270305(1), cf. A073519. - M. F. Hasler, Oct 22 2018

Sequence A073473 gives a variant using "primes including 1" (for historical reasons), to which also refers A073502. - M. F. Hasler, Oct 24 2018

LINKS

Table of n, a(n) for n=1..9.

Harvey Heinz, Prime Magic Squares

Index entries for sequences related to magic squares

EXAMPLE

The square is [101 5 71 ; 29 59 89 ; 47 113 17].

The lexicographically smallest equivalent variant (modulo reflections on the symmetry axes of the square) is [17 89 71 ; 113 59 5 ; 47 29 101], cf. A320872. - M. F. Hasler, Oct 24 2018

PROG

(PARI) A024351=select(p->setsearch(P, 118-p), P=primes(30)[^5]) \\ 118 = 2*59, where 59 is the central prime; primes(30) = primes < 118. For the magic square itself, use A320872_row(1). - M. F. Hasler, Oct 25 2018

CROSSREFS

Cf. A073350, A073520, A270305, A164843.

Cf. A073473, A073502.

Cf. A320872 (3 X 3 magic squares of primes), A268790 (magic sums of these).

Sequence in context: A075695 A146278 A034937 * A246325 A086523 A220082

Adjacent sequences: A024348 A024349 A024350 * A024352 A024353 A024354

KEYWORD

fini,full,nonn

AUTHOR

Karl Schmerbauch (karl.j.schmerbauch(AT)boeing.com)

EXTENSIONS

Offset corrected by Arkadiusz Wesolowski, Nov 26 2011

STATUS

approved