A253261 - OEIS

A253261

Odd Brazilian squares.

81, 121, 225, 441, 625, 729, 1089, 1225, 1521, 2025, 2401, 2601, 3025, 3249, 3969, 4225, 4761, 5625, 5929, 6561, 7225, 7569, 8281, 8649, 9025, 9801, 11025, 12321, 13225, 13689, 14161, 14641, 15129, 15625, 16641, 17689, 18225, 19881, 20449, 21025, 21609, 23409, 24025, 25281, 25921, 27225, 28561

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OFFSET

1,1

COMMENTS

121 is believed to be the only number of the form p^2 for prime p.

The previous comment conjectures the 1 and the 121 are the only difference with respect to A062532. - R. J. Mathar, Jul 25 2015

LINKS

Table of n, a(n) for n=1..47.

PROG

(PARI) for(n=4, 10^5, for(b=2, n-2, d=digits(n, b); if(vecmin(d)==vecmax(d)&&(n+1)%2==0&&issquare(n), print1(n, ", "); break)))

CROSSREFS

Cf. A125134, A257521.