40393

Appears in sequences

• Numbers that are the sum of 7 positive 9th powers.at n=17A003396
• Cubes written backwards.at n=33A004165
• a(n) = binomial(n,0) - binomial(n,2) + binomial(n,4).at n=33A058923
• Semiprimes (A001358) whose digit reversal is a cube.at n=7A115712
• Base 4 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-4 digits, for some k.at n=39A162219
• Greatest integer equal to the sum of the n-th powers of its base-4 digits (written in base 10).at n=9A162221
• a(n) is the n-th J_13-prime (Josephus_13 prime).at n=9A163793
• a(n) = n^3 + (1-n)^2.at n=34A168297
• Sum of the two smallest parts from the partitions of 4n into 4 parts with smallest part = 1.at n=39A239059
• Expansion of Product_{k>=1} 1 / (1 - x^k)^(k*(3*k + 2)).at n=7A294692
• Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).at n=47A379122