25317

Appears in sequences

• Number of increasing subsequences that can be made from the sequence of successive primes.at n=25A091956
• Sum C(n-3k,3k+1), k=0..floor(n/6).at n=23A102516
• Nonsquarefree "year numbers" (numbers n such that phi(n) = 2*phi(sigma(n)): A137815).at n=2A137816
• a(n) = 729*n - 198.at n=34A156772
• Number of nX5 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nonincreasing order.at n=4A166837
• Positions of incrementally largest terms in the continued fraction for Euler's constant gamma (A002852).at n=12A224849
• Number of compositions of n with exactly five descents.at n=5A241630
• Smallest number m such that A272677(m) = n.at n=6A272678
• a(n) is the smallest positive integer k such that there does not exist an m such that floor(m^2/10^n) = k.at n=4A322666
• Number of integer partitions of n whose weighted sum is not divisible by n.at n=37A362560
• Expansion of (1 + x)^2/(1 - x^3*(1 + x)^3).at n=22A375321