66691

Appears in sequences

• Pisot sequence E(8,10), a(n) = floor( a(n-1)^2/a(n-2) + 1/2 ).at n=36A010916
• Berend Jan van der Zwaag's conjectured complete list of numbers that start different "expanding periodic loops" under the mapping described in A053392 and A060630.at n=23A103117
• Number of compositions of n into floor(j/3) kinds of j's for all j>=1.at n=29A176848
• Consider the prime factors, with multiplicity, in ascending order, of a composite number not ending in 0. Take their sum and repeat the process deleting the minimum number and adding the previous sum. The sequence lists the numbers that after some iterations reach a sum equal to the reverse of themselves.at n=11A247013
• Expansion of (6*x^5+5*x^4+4*x^3+3*x^2+2*x+8)/(1-x-x^6).at n=36A275627
• a(n) is the sum of all valleys in the set of Catalan words of length n.at n=11A371963
• a(n) = Sum_{k=0..n} (-1)^k * binomial(3*n+k,n-k).at n=7A390570