22872

Appears in sequences

• a(n) = [ a(n-1)/a(1) ] + [ a(n-2)/a(2) ] + ... + [ a(1)/a(n-1) ], for n >= 3.at n=25A022876
• Numbers whose set of base-9 digits is {3,4}.at n=38A032833
• Numbers having four 3's in base 9.at n=30A043468
• Numbers k that divide the sum of the digits of (2k)^k.at n=27A108860
• Number of permutations of length n which avoid the patterns 1243, 1432, 4213.at n=9A116744
• Numbers k such that 2*6^k + 1 is prime.at n=31A120023
• a(n) = 1728*n - 1320.at n=13A157263
• Number of nX2 0..7 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=10A201095
• Number of partitions of n with difference 3 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=43A242694
• Numbers D such that D^2 = A^3 + B^4 + C^5 has more than one solution in positive integers (A, B, C).at n=14A256603
• Number of integer partitions of n with integer median of 0-appended first differences.at n=37A360688
• a(n) = Sum_{j=0..2^n - 1} b(j) for n >= 0 where b(n) = (A023416(n) + 1)*b(A053645(n)) + [A036987(n) = 0]*b(A266341(n)) for n > 0 with b(0) = 1.at n=7A363417