28293

Appears in sequences

• Lucky numbers with smallest increasing gaps (upper terms).at n=23A031885
• Natural numbers written out with their digits grouped in sets of 5 (leading zeros omitted).at n=9A091341
• Number of semiprimes s such that 2^n < s <= 2^(n+1).at n=17A120033
• Expansion of 1/(x^k*(1-x-2*x^(k+1))) for k=6.at n=32A143449
• Triangle read by rows: T(n,k) is the number of ascent sequences of length n with first occurrence of the maximal value at position k-1.at n=51A218580
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 437", based on the 5-celled von Neumann neighborhood.at n=33A272155
• Numbers k such that 30*k - 1, 30*k + 1, 30*k^2 - 1 and 30*k^2 + 1 are all prime.at n=38A359184