login

A130465 as a triangular array

1
13
135
1245
13579
1357911
135791113
13579111315
124578101113
135791113151719
13579111315171921
157111317192325293135
135791113151719212325

A130465 as a square array

1111111111111
332333323353
54555545575
57777577117
9999799139
111111811111711
13131013131913
151115152315
1317172517
19192919
213121
3523
25
1111111111111
332333323353
54555545575
57777577117
9999799139
111111811111711
13131013131913
151115152315
1317172517
19192919
213121
3523
25