login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A345720 as a simple table

na(n)
1287718651
2553545456
3746783675
4972232800
51005620508
61040741042
71070652352
81074892544
91182426366
101184966816
111197332400
121243267146
131317183650
141364866263
151387455091
161429663400
171498160992
181529189818
191554833117
201558594400
211610298901

[287718651,553545456,746783675,972232800,
 1005620508,1040741042,1070652352,1074892544,
 1182426366,1184966816,1197332400,1243267146,
 1317183650,1364866263,1387455091,1429663400,
 1498160992,1529189818,1554833117,1558594400,
 1610298901]