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 A361612 #33 Jul 25 2024 10:44:24 %S A361612 3,31,316,3162,31622,316227,3162277,31622776,316227766,3162277660, %T A361612 31622776601,316227766016,3162277660168,31622776601683, %U A361612 316227766016837,3162277660168379,31622776601683793,316227766016837933,3162277660168379331,31622776601683793319 %N A361612 Decimal expansion of sqrt(10) truncated to n places (after the decimal point). %F A361612 a(n) = floor(sqrt(10) * 10^n). %F A361612 a(n) = A017934(2*n + 1). %F A361612 a(n-1) mod 10 = A010467(n). - _Chai Wah Wu_, Mar 26 2023 %t A361612 Floor[Sqrt[10]*10^Range[0, 20]] (* _Paolo Xausa_, Jul 25 2024 *) %o A361612 (Python) %o A361612 from math import isqrt %o A361612 def A361612(n): return isqrt(10**((n<<1)|1)) # _Chai Wah Wu_, Mar 26 2023 %Y A361612 Cf. A010467, A011547, A017934. %K A361612 nonn %O A361612 0,1 %A A361612 _Amit Katz_, Mar 17 2023