Oh it looks like i was consufed. It is Round(n^0.(3)) not ROUNDDOWN(n^0.(3)). Thanks.
Let's say one day 200 nodes are online: ( (51,840 DNA mined a day) ÷ 2 ) ÷ (nodes online) = (25,920 DNA ÷ 200 nodes) = 129.6 DNA per node a day
Last week there was ~ 210 nodes a day mining on average. The rewards were ~ 123 DNA per node a day.
Well i don't know if that works for mining rewards too but I've just checked that older accounts receive bigger rewards and bigger mining penalties.
I don't know how did it happen but I got a penalty again and it's 21 DNA,
My today penalty = 31.487 DNA
If i have 50% bigger penalty I should also mine 50% faster?
Epoch 33 validation reward for 32 Epoch old account was equal to 199.054 (
https://scan.idena.io/address?address=0x18e4b09F96Ee1079b4a4f9600bE92FaE3a25b386#rewards)
Mine (16 epoch old account) received 157.989
Age 1 received 62.698 (
https://scan.idena.io/address?address=0x7a16868e5dfe46706dbe54bea291a24220780c63)
I'm not yet sure if that affects mining rewards too. If so than 129.6DNA counted by you is an average reward (f.e. from 30DNA for age 1 to 200DNA for age 33)