43698

Appears in sequences

• Number of partitions of 1/n into 4 reciprocals of positive integers.at n=27A020327
• Sequence A106456 interpreted as binary numbers and converted to decimal.at n=42A106455
• Chebyshev transform of the second kind of the Pell numbers.at n=18A112575
• Numbers k such that k divides 1 + Sum_{j=1..k} prime(j)^7.at n=14A128171
• The number of staircase polygons with a staircase hole counted by the outer half-perimeter only.at n=5A173408
• Partial sums of A005985.at n=12A176640
• Number of -3..3 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=4A200548
• T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=25A200553
• Number of -n..n arrays x(0..6) of 7 elements with zero sum and nonzero second differences.at n=2A200557
• Catalan Unranking function U(size,rank) for totally balanced binary strings (converted to decimal). Each row 'size' of an array lists all A000108(size) such items in standard lexicographic order, followed by an infinite number of zeros.at n=63A213704
• a(n) is the index of the first occurrence of the Euclidean distance prime(n) from a point on a square spiral to its starting point at 1.at n=32A336335