login

A077661 as a triangular array

1
24
369
2468
510152025
234689
7142128354249
246810121416
369121518212427
245681012141516
112233445566778899110121
234689101214151618
1326

A077661 as a square array

123252723211213
4641031446422326
9615421695334
8206288126446
2583510158558
942121810669
491421127710
1624148812
27159914
1611015
12116
18
123252723211213
4641031446422326
9615421695334
8206288126446
2583510158558
942121810669
491421127710
1624148812
27159914
1611015
12116
18