47774

Appears in sequences

• Palindromic even numbers with exactly 2 prime factors (counted with multiplicity). Equivalently, palindromic numbers of the form 2*p with p prime.at n=35A075813
• Expansion of eta(q^6) * eta(q^10) / (eta(q) * eta(q^15)) in powers of q.at n=46A094023
• Expansion of q * (chi(-q^3) * chi(-q^5)) / (chi(-q) * chi(-q^15))^2 in powers of q where chi() is a Ramanujan theta function.at n=45A123630
• Number of parts > 1 in the last section of the set of partitions of n.at n=39A138135
• Number of parts in all partitions of 2n that do not contain 1 as a part.at n=20A182734
• Numbers whose sum of anti-divisors is equal to the sum of the divisors of their arithmetic derivative.at n=27A249912
• Expansion of (eta(q^6) * eta(q^10) / (eta(q) * eta(q^15)))^2 in powers of q.at n=23A263348
• Number of nX5 0..1 arrays with every element equal to 0, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.at n=12A298664
• Lexicographically first sequence of distinct terms such that the sum of any two terms is not a term of the sequence, and the sum of any two digits is not a digit of the sequence.at n=46A302938