34542

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 1342, 4312.at n=12A116791
• Least positive integer m such that m*n divides sigma(m^2+n^2), where sigma(k) is the sum of all positive divisors of k.at n=24A248189
• Expansion of Product_{k>=1} (1 + x^k + x^(3*k)) / (1 - x^k).at n=24A266647
• Triples of practical numbers: numbers n such that n-2, n, n+2 are all practical numbers.at n=34A287682
• Numbers k such that (17*10^k - 41)/3 is prime.at n=21A291867
• Numbers k such that A033461(k) is divisible by k.at n=36A304028