login

A277508 as a simple table

na(n)
0-1
12
2-4
315
4-44
5385
6-294
732473
8280120
98528049
10170757910
114748977321
12132530188308
134210910824393
14142940443542274
155273270156096265
16208276214340505456
178800344095155520353
18395536292522024420142
1918853858817276143333321
20949787282108877829653580

[-1,2,-4,15,-44,385,-294,32473,280120,8528049,
 170757910,4748977321,132530188308,4210910824393,
 142940443542274,5273270156096265,
 208276214340505456,8800344095155520353,
 395536292522024420142,18853858817276143333321,
 949787282108877829653580]