Function paid_proposer_count 

pub fn paid_proposer_count(gas_price: u64, reference_gas_price: u64) -> u64

SIP-45: the number of consensus submissions a gas price pays for. Every transaction may be proposed by MAX_UNPAID_ALLOWED_PROPOSERS validators; a gas price of n times the reference price buys n. The single definition behind sizing an explicit proposer set, the immediate slots of staggered submission, and the deferral of unpaid duplicates.