19916

Appears in sequences

• Denominators of continued fraction convergents to sqrt(217).at n=11A041405
• (Terms in A028273)/2.at n=27A051298
• Braided power sequence: A065692 is b(n+1) = 3*b(n) + 2*d(n) - c(n), A065693 is c(n+1) = 3*c(n) + 2*b(n) - d(n) and this is d(n+1) = 3*d(n) + 2*c(n) - b(n), starting with b(0) = 0, c(0) = 1 and d(0) = 2.at n=7A065694
• The 28-cycle of the n => sigma(n)-n process, where sigma(n) is the sum of divisors of n (A000203).at n=26A072890
• Conjectured list of sociable numbers.at n=8A122726
• Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 3 adjacent terms unique.at n=7A152320
• Sums of two successive primes s such that s+-3 are primes.at n=35A179485
• Numbers n such that Bernoulli number B_{n} has denominator 1590.at n=30A272140
• Positions of squares in A276573.at n=49A277014
• Partial sums of A066570.at n=9A281025
• Partial sums of A299037.at n=49A299767
• Conjectured list of numbers which are perfect, amicable, or sociable.at n=28A347770
• Position of 30^n among 5-smooth numbers A051037.at n=15A372400
• Number of distinct sums i^3 + j^3 + k^3 for 0<=i<=j<=k<=n.at n=49A374710
• Expansion of (1 + x - x^3)/((1 + x - x^3)^2 - 4*x).at n=13A376785
• Consecutive states of the linear congruential pseudo-random number generator (10924*s+11830) mod (2^15+1) when started at s=1.at n=34A384150
• Expansion of 1 / ((1-x)^2 - x^6).at n=26A392541