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”).

A331772 as a simple table

na(n)
10
20
316
448
5120
6224
7424
8688
91096
101600
112392
123344
134568
145984
157976
1610256
1713112
1816320
1920360
2024848
2130136
2235936
2343208
2451152
2560184
2669952
2781800
2894576
29109000
30124448
31141944
32160592
33181480
34203648
35229400
36256688
37286424
38317792

[0,0,16,48,120,224,424,688,1096,1600,2392,3344,
 4568,5984,7976,10256,13112,16320,20360,24848,
 30136,35936,43208,51152,60184,69952,81800,94576,
 109000,124448,141944,160592,181480,203648,229400,
 256688,286424,317792]