19478

Appears in sequences

• Number of partitions of n into parts not of the form 21k, 21k+6 or 21k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 9 are greater than 1.at n=38A035984
• a(n) = T(n,n-4), array T as in A055818.at n=21A055821
• Number of twice-partitions of n into partitions with all odd lengths and sums.at n=22A358827
• Numbers that are partial sums of the reverses of the sequence of primes and are reverses of primes.at n=10A381245