The Pillai sequence is the sequence of integers that have a record number of terms in their greedy representations as sums of prime numbers (and one).It is named after Subbayya Sivasankaranarayana Pillai, who first defined it in 1930. The th number in the Pillai sequence is the smallest number whose greedy representation as a sum of primes (and one) requires terms. These numbers are 0, 1, 4, 27, 1354, 401429925999155061, ... (sequence in the OEIS)