48828

Appears in sequences

• Numbers in which all pairs of consecutive base-5 digits differ by 3.at n=20A033076
• Smallest triangular number containing exactly n 8's.at n=2A036525
• Triangular numbers k*(k+1)/2 such that A068865(k) = k*(k+1)/2.at n=25A068866
• a(n) = p(n)*(p(n)-1)/2 where p(n) = upper member of n-th pair of twin primes.at n=19A082669
• Triangular numbers with only even digits.at n=12A117978
• Triangular numbers composed of digits {2,4,8}.at n=1A119162
• a(n) = floor(5^n/n).at n=7A129795
• a(n) = (5^n - 1)/(2^(3 - (n mod 2))).at n=8A152417
• a(n) = 169*n^2 - 13.at n=16A158550
• Iterative mapping with offset: a(1)=1927639, a(n)=A179216(a(n-1)-1).at n=1A179226
• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x| >= w + |y-z|.at n=25A212714
• Floor((5^n-1)/n).at n=7A225586
• Number of acute isosceles triangles on a centered hexagonal grid of size n.at n=8A241229
• Floor(m^n/n) with n >= m >= 1.at n=32A246003
• Product of n and the sum of all divisors of all positive integers <= n.at n=38A256533
• Numbers k such that the symmetric representation of sigma(k) has only two parts and they meet at the center of the Dyck path.at n=16A262259
• Triangular numbers that are repdigits with length > 2 in some base.at n=25A274084
• a(n), n>1, is the smallest number k whose symmetric representation of sigma(k) has two parts and has a larger number of legs in its two parts than a(n-1); a(1)=3.at n=39A279105
• Number of nX3 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=4A281125
• Number of nX5 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=2A281127