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.

A322629 For a nonnegative number m with decimal digits (d_1, ..., d_k), let s(m) be the area of the convex hull of the set of points { (i, d_i), i = 1..k }; a(n) = 2 * s(n).

Table of values

n a(n)
100 1
101 2
102 3
103 4
104 5
105 6
106 7
107 8
108 9
109 10
110 1
111 0
112 1
113 2
114 3
115 4
116 5
117 6
118 7
119 8
120 3
121 2
122 1
123 0
124 1
125 2
126 3
127 4
128 5
129 6
130 5
131 4
132 3
133 2
134 1
135 0
136 1
137 2
138 3
139 4
140 7
141 6
142 5
143 4
144 3
145 2
146 1
147 0
148 1
149 2
150 9
151 8
152 7
153 6
154 5
155 4
156 3
157 2
158 1
159 0
160 11
161 10
162 9
163 8
164 7
165 6
166 5
167 4
168 3
169 2
170 13
171 12
172 11
173 10
174 9
175 8
176 7
177 6
178 5
179 4
180 15
181 14
182 13

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 15, 14, 13]