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.
%I A291630 #10 Nov 03 2023 11:08:47 %S A291630 24,76,87,236,314,316,766,816,834,2366,2383,2387,2424,2563,2626,2976, %T A291630 7613,7666,8117,8184,8234,8286,8366,8716,8814,9266,9316,9363,9474, %U A291630 9786,9837,23634,23784,23866,23874,24474,25663,25684,26076,26187,26374,26417,27687 %N A291630 Numbers k such that 5 is the smallest decimal digit of k^2. %H A291630 Chai Wah Wu, <a href="/A291630/b291630.txt">Table of n, a(n) for n = 1..10000</a> %e A291630 87 is in the sequence because 87^2 = 7569, the smallest decimal digit of which is 5. %t A291630 Select[Range[30000],Min[IntegerDigits[#^2]]==5&] (* _Harvey P. Dale_, Nov 03 2023 *) %o A291630 (PARI) select(k->vecmin(digits(k^2))==5, vector(30000, k, k)) %o A291630 (Python) %o A291630 A291630_list = [k for k in range(1,10**6) if min(str(k**2)) == '5'] # _Chai Wah Wu_, Aug 28 2017 %Y A291630 Cf. A291625, A291626, A291627, A291628, A291629, A291631. %K A291630 nonn,base %O A291630 1,1 %A A291630 _Colin Barker_, Aug 28 2017