64662

Appears in sequences

• a(n) = floor(X/Y) where X = concatenation of first n odd numbers in increasing order and Y = n-th triangular number.at n=5A067120
• Decimal concatenations of the 38 quintuples (d1,d2,d3,d4,d5) with elements in {2,4,6} for which there exists a prime p >= 7 such that the differences between the 6 consecutive primes starting with p are (d1,d2,d3,d4,d5).at n=29A078870
• a(1)=1, a(2)=1. a(n) = the sum of the two largest earlier terms which are both coprime to n.at n=66A122457