22240

Appears in sequences

• Sum_{k<=n} (sigma(k)^2), where sigma(k) denotes the sum of the divisors of k A000203.at n=27A072379
• Bond series for first perpendicular moment of 4.8 (bathroom tile) lattice.at n=21A120556
• a(n) = 14*n^2 - 4*n.at n=40A195023
• Rounded sums of the non-integer cube roots of n, as partitioned by the integer roots: round(Sum_{j=n^3+1..(n+1)^3-1} j^(1/3)).at n=19A248575
• E.g.f.: Product_{k>=1} (1 + tanh(x^k)).at n=7A270664
• Number of 3-time self-crossing partitions on n nodes.at n=9A287222
• Number of partitions of prime(n) into distinct parts not larger than prime(n-1).at n=17A318604
• The numbers k for which gcd(k, phi(k)) + gcd(k, tau(k)) = gcd(k, sigma(k)).at n=2A326416
• Consecutive states of the linear congruential pseudo-random number generator for the Texas Instruments TI99 when started at 1.at n=7A384221