112140

Appears in sequences

• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives x numbers.at n=25A125490
• Exponential Riordan array (e^(mx),x*A000108(x)), m=3.at n=51A185948
• Record (maximal) gaps between prime 5-tuples (p, p+2, p+6, p+8, p+12).at n=8A201073
• The number of 5 x 5 matrices of nonnegative integers such that the sum of the entries in the i-th row equals the sum of the i-th column for each i and the total sum equals n.at n=9A209836
• a(n) is the smallest number k >= 1 with exactly n divisors d, for which sigma(k) is divisible by d*sigma(d).at n=24A344103