66661

Appears in sequences

• G.f.: (1 + x^3 + x^4 + ... + x^12 + x^15)/Product_{i=1..10} (1 - x^i).at n=39A003403
• Numbers having four 6's in base 10.at n=25A043516
• Number of rooted identity trees with n nodes and 3 leaves.at n=39A055328
• 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=19A103117
• Fourth powers (n * n * n * n) in carryless arithmetic mod 10.at n=23A169886
• Fourth powers (n * n * n * n) in carryless arithmetic mod 10.at n=41A169886
• a(n) = (6*10^n - 51)/9 for n > 0.at n=4A173805
• Number of partitions of n with rank 3 or higher (the rank of a partition is the largest part minus the number of parts).at n=48A363230