72927

Appears in sequences

• Mixed partitions of n.at n=43A002096
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20.at n=27A031698
• a(n) = concatenation of n^2 and n.at n=26A055436
• a(n) = 100*n^2 + n.at n=26A055438
• a(n) = floor(n*exp(n)).at n=9A058738
• Smallest multiple of n which begins with R(n) and ends in n where R(n) (A004086) is the digit reversal of n. Suitable number of zeros are assumed to the left of the MSD if required.at n=26A077741
• a(n) = 729*n^2 + 27.at n=10A158645
• Palindromic numbers that are fixed points of the TITO operation (see A161594) and are not products of palindromic primes.at n=0A161730
• Palindromic composite numbers starting with a digit 7.at n=39A222728
• For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u*x+v*y with u,v minimal; a(n) = sum of the values of u^2+v^2.at n=36A345434
• Number of distinct characteristic polynomials for 2 X 2 matrices with entries from {0, 1, ..., n}.at n=35A366448