32523

Appears in sequences

• Starting positions of strings of three 5's in the decimal expansion of Pi.at n=33A083620
• a(n) is the smallest number m such that for the n-digit number s=10^(n-1)+ m, 10*s+1, 10*s+3, 10*s+7 and 10*s+9 are primes.at n=16A097639
• Consider all (2n+1)-digit palindromic primes of the form 10...0M0...01 (so that M is a palindrome with <= 2n-1 digits); a(n) = smallest such M.at n=48A100026
• n times n+2 gives the concatenation of two numbers m and m-3.at n=3A116266
• The Wiener index of the Dutch windmill graph D(5,n) (n>=1).at n=36A180579
• Palindromic composite numbers starting with a digit 3.at n=33A222726
• Number of nX4 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=2A224020
• T(n,k)=Number of nXk 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=17A224024
• Number of 3 X n 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=3A224025
• a(n) = Sum_{i=0..n} digsum_4(i)^4, where digsum_4(i) = A053737(i).at n=54A231667
• Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.at n=44A254881
• Twice partitioned numbers where the first partition is constant and the latter partitions are strict.at n=44A279788
• Successive numbers arising from the Moessner construction of the sequence A010790 (n!*(n+1)!) on pages 64, 65 of Conway-Guy's "Book of Numbers".at n=32A346595
• Expansion of (1/x) * Series_Reversion( x/(x+1/(1-x+x^4)) ).at n=9A370801
• Number of curved edges among all distinct circles that can be constructed from the 3 vertices and the equally spaced 3*n points placed on the sides of an equilateral triangle, using only a compass.at n=5A372616