65341

Appears in sequences

• Consider all ways of writing a number as p+2m^2 where p is 1 or a prime and m >= 0; sequence gives numbers that are expressible in at least 2 more ways than any smaller number.at n=27A016067
• Strong pseudoprimes to base 62.at n=30A020288
• a(n) = n^2*(n^2 + 1)/2.at n=19A037270
• Triangular number x such that x + reverse of x is a prime.at n=17A072387
• A073214/2.at n=12A073222
• Terms of A073872 that do not change their position in the rearrangement; i.e., values of A073872(n) which equal n(n+1)/2.at n=28A073873
• Triangular numbers which are one more than a product of distinct triangular numbers.at n=27A083517
• Triangular numbers whose sum of aliquot divisors is a prime number.at n=28A083676
• Row sums of triangle A093922.at n=26A093925
• Triangular numbers for which the number of divisors is also a triangular number.at n=22A116541
• Hexagonal numbers whose number of divisors is also a hexagonal number.at n=9A116565
• a(n) = 60*n^2 + 1.at n=33A158673
• Row sums of the triangle A045975.at n=18A204558
• Number of 2 X 2 matrices with all terms in {0,1,...,n} and even trace.at n=18A210378
• Triangular numbers of the form p*w, where p is a prime number and w is a prime power (A025475).at n=19A225674
• Triangular numbers representable as triangular(x)*triangular(y)+1.at n=20A226389
• The Wiener index of the graph obtained by applying Mycielski's construction to a benzenoid consisting of a linear chain of n hexagons.at n=25A228597
• Triangular numbers divisible by the square of the sum of their digits.at n=7A243008
• Triangular numbers that are the product of a square number and a prime number.at n=23A253653
• a(n) = (n^2 + (n+1)^2)*(n^2 + (n+1)^2 + 2*n*(n+1)).at n=9A272850