31140

Appears in sequences

• Series for first parallel moment of hexagonal lattice.at n=10A006740
• Number of partitions satisfying 0 < cn(0,5) + cn(1,5) + cn(2,5) + cn(3,5) and 0 < cn(0,5) + cn(4,5) + cn(2,5) + cn(3,5).at n=39A039903
• McKay-Thompson series of class 26B for Monster.at n=34A058597
• Triangular spiral sequence: sequence is written as a triangular spiral, each entry is the sum of the row in the previous direction containing the previous entry.at n=32A063177
• a(n) = prime(n)*(prime(n+1) + 1).at n=39A123134
• Expansion of q^(-1) * (chi(-q^13) / chi(-q))^2 in powers of q where chi() is a Ramanujan theta function.at n=34A128518
• a(n) = A130179(n)/81.at n=26A130085
• a(n) = Sum_{i=0..n} Sum_{j=0..n} (i XOR j), where XOR is the binary logical exclusive-or operator.at n=36A224923