28484

Appears in sequences

• Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 15 (most significant digit on right and removing all least significant zeros before concatenation).at n=15A029532
• a(n+1)=a(n)+a^(n), where the addition is in base 11 and where a^(n) is obtained from a(n) by replacing each digit with its multiplicative inverse modulo 11. Zero digits, if any, are deleted.at n=13A053697
• Number of permutations of length n which avoid the patterns 231, 12345.at n=14A116844
• Numbers n with property that concatenation (2*n+1)//n of the decimals is a square.at n=9A176185
• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, three, four or five distinct values for every i,j,k<=n.at n=9A211726
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..4 array extended with zeros and convolved with 1,1,1.at n=21A222434
• Number of unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 10.at n=56A244464
• Number of binary words of length n such that for every prefix the number of occurrences of subword 101 is larger than or equal to the number of occurrences of subword 010.at n=16A260668
• Numbers k such that 421*2^k+1 is prime.at n=15A316712