cp's OEIS Frontend

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.

A377905 Irregular triangle read by rows: T(n,k) (n >= 0, k >= 0, T[n,k]>0) is the total number of occurrences of the digit k in terms 0 to n of A329447.

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%I A377905 #24 Nov 20 2024 08:52:36
%S A377905 1,2,1,2,3,3,3,1,3,4,2,3,4,4,4,4,4,1,4,5,4,2,4,5,5,3,4,5,5,5,5,5,5,5,
%T A377905 1,5,6,5,5,2,5,6,6,5,3,5,6,6,6,4,5,6,6,6,6,6,6,6,6,6,1,6,7,6,6,6,2,6,
%U A377905 7,7,6,6,3,6,7,7,7,6,4,6,7,7,7,7,5,6,7,7,7,7,7,7,7,7,7,7,7,1,7,8,7,7,7,7,2,7,8,8,7,7,7,3,7,8,8,8,7,7,4,7,8,8,8,8,7
%N A377905 Irregular triangle read by rows: T(n,k) (n >= 0, k >= 0, T[n,k]>0) is the total number of occurrences of the digit k in terms 0 to n of A329447.
%C A377905 A329447(n) is constructed by finding the smallest number in row n-1 of this triangle, and in case of a tie, choosing the leftmost. If this is an entry c in column d, then A329447(n) = 10*c+d.
%C A377905 Row n has sum 2*n+1.
%H A377905 N. J. A. Sloane, <a href="/A377905/a377905.jpg">Rows 0 to 15</a>
%H A377905 N. J. A. Sloane, <a href="/A377905/a377905.txt">Rows 0 to 100</a>
%H A377905 N. J. A. Sloane, <a href="/A377905/a377905_1.txt">Naive Maple code for A329447 and the present sequence</a>
%e A377905 [See links for initial rows of the triangle]
%p A377905 [See link]
%Y A377905 Cf. A329447.
%K A377905 nonn,tabf
%O A377905 0,2
%A A377905 _N. J. A. Sloane_, Nov 19 2024