37023

Appears in sequences

• a(n) = n*(2*n-1)*(2*n+1).at n=21A035328
• Convolution of sequence of primes with sequence sigma(n).at n=33A086718
• Number of A095287-primes in range ]2^n,2^(n+1)].at n=19A095297
• Number of A095315-primes in range ]2^n,2^(n+1)].at n=19A095335
• Denominator of sum of reciprocals of first n pentatope numbers A000332.at n=39A118412
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation.at n=13A147012
• a(0)=1, a(n) = (3n-1)*3n*(3n+1)/2 for n>0.at n=14A157024
• Denominator of (n+3) / ((n+2) * (n+1) * n).at n=40A168061
• Denominator of c(n) = (n^2+n+2)/((n+1)*(n+2)*(n+3)).at n=40A241269
• Number of partitions of n with difference 3 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=46A242694
• Numerator of (n-1)*n*(n+1)/4.at n=42A276670
• Smallest fixed points (>0) of the base-2*n Kaprekar map.at n=20A319839
• Numbers m that divide A306070(m) = Sum_{k=1..m} bphi(k), where bphi is the bi-unitary totient function (A116550).at n=8A356747