18632

Appears in sequences

• a(n) = n*(n + 1)*(n^2 + n + 2)/4.at n=16A001621
• Expansion of Molien series for 8-dimensional real Clifford group 2^{1+6}.Alt_8.2 of genus 3 and order 5160960.at n=52A024186
• Sorted Galois numbers.at n=37A028689
• Multiplicity of highest weight (or singular) vectors associated with character chi_78 of Monster module.at n=39A034466
• Coordination sequence for A_16 lattice.at n=2A035842
• Product of a prime and the previous number.at n=32A036689
• Bessel function J_0(n) is a monotonically decreasing positive sequence.at n=35A046960
• Numbers m such that 2*m - sigma(m) is a divisor of m and greater than one, where sigma = A000203 is the sum of divisors.at n=13A060326
• Deficient oblong numbers.at n=22A077804
• Even and odd solutions to abs(sigma(x)-2x) <= log(x). Numbers n whose abundance-radius does not exceed log(n).at n=39A088011
• Total sum of parts of multiplicity 1 in all partitions of n.at n=24A103628
• Near-multiperfects with primes excluded, abs(sigma(m) mod m) <= log(m).at n=41A117347
• Near-multiperfects with primes and powers of 2 excluded, abs(sigma(m) mod m) <= log(m).at n=28A117348
• Near-multiperfects with primes, powers of 2 and 6 * prime excluded, abs(sigma(n) mod n) <= log(n).at n=28A117349
• Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).at n=12A117350
• Value of the concatenation of the first n+1 terms of A118605, seen as a binary number.at n=15A119027
• Numbers m whose abundance sigma(m) - 2m = -4. Numbers whose deficiency is 4.at n=8A125246
• Numbers k such that k^2 divides 9^k - 1.at n=38A127101
• Numbers k such that k^2 divides 15^k-1.at n=25A128395
• Numbers m such that m^k does not divide the denominator of the m-th generalized harmonic number H(m,k) nor the denominator of the m-th alternating generalized harmonic number H'(m,k), for k = 4.at n=38A128674