82948

Appears in sequences

• Number of 2n-step self-avoiding walks on diamond lattice ending at point with x = 0.at n=6A001396
• Numbers k such that 2*9^k + 1 is prime.at n=25A056802
• Numbers m such that DivisorSigma(4*k-2, m) mod m = 0 holds presumably for all k; that is, (4k-2)-power-sums of divisors of m are divisible by m for all k.at n=19A066290
• Number of non-intersecting cycle systems in a particular directed graph.at n=12A114300
• Triangle read by rows: Number of 2n-step self-avoiding walks on diamond lattice ending at point with x = 2k.at n=21A227715
• For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer.at n=21A229996
• Rectangular array, by antidiagonals; row n consists of the numbers R(n)/n, where R(n) is row n of the array at A305995.at n=46A305996
• Total sum of the number of divisors of the element sum over all nonempty subsets of [n].at n=13A309403
• Number of integer partitions of n whose multiplicities appear with relatively prime multiplicities.at n=44A319160
• Numbers k such that the sum of the squares of the odd divisors of k (A050999) is divisible by k.at n=26A355543