28560

Appears in sequences

• Let A(n) = #{(i,j): i^2 + j^2 <= n}, V(n) = Pi*n, P(n) = A(n) - V(n); sequence gives values of n where |P(n)| sets a new record.at n=45A000099
• Number of partitions of at most n into at most 5 parts.at n=45A002622
• Maximal coefficient in (x + x^2 + x^4 + x^8 + ...)^n.at n=6A007657
• cosh(tanh(x)*arctan(x))=1+12/4!*x^4-480/6!*x^6+28560/8!*x^8...at n=4A012685
• a(n) = n*(n + 1)*(n + 2)*(n + 3)/2.at n=14A033486
• a(n) = (n-3)*A006918(n-2)/2 for n >= 2, with a(0) = a(1) = 0.at n=35A038376
• a(n) in base 13 is a repdigit.at n=48A048337
• Numbers k such that sopfr(k) = sopfr(k + sopfr(k)).at n=29A050780
• Numbers k such that k^12 == 1 (mod 13^4).at n=11A056095
• Number of labeled n-node 4-valent graphs containing two adjacent double edges.at n=8A058832
• Jordan function J_4(n).at n=12A059377
• Positive numbers which are one less than a perfect square that is also another power.at n=16A062965
• A level 11 weight 5 form.at n=12A065103
• Index values for new maxima in sequence A007365.at n=29A065932
• a(n) is the least positive integer k such that k is a repdigit number in exactly n different bases B, where 1<B<k.at n=41A066460
• Engel expansion of sinh(1/2).at n=42A068379
• First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770).at n=28A072494
• Product of all n - d, where d < n and d is a divisor of n.at n=34A072513
• a(n) = n*(n+1)^2*(2+n)*(3+2*n)*(19+8*n)/180.at n=7A076758
• Numbers k such that (k+1)*(2*k+1) is a perfect square.at n=3A078522