29670

Appears in sequences

• Aliquot sequence starting at 1134.at n=9A014365
• Number of length 3 walks on an n-dimensional hypercubic lattice starting at the origin and staying in the nonnegative part.at n=30A064043
• Numbers k such that k and 5*k, taken together, are pandigital.at n=33A115925
• Numbers k such that 2k+1, 4k+1, 6k+1 and 8k+1 are primes.at n=19A124409
• a(n) = prime(prime(prime(prime(n) - 1) - 1) - 1) - 1, where prime(n) is the n-th prime.at n=23A141217
• Averages of twin prime pairs of A074378.at n=15A154563
• Number of (n+1)X(1+1) 0..3 arrays colored with the maximum plus the lower median minus the minimum of every 2X2 subblock.at n=2A236315
• Number of (n+1)X(3+1) 0..3 arrays colored with the maximum plus the lower median minus the minimum of every 2X2 subblock.at n=0A236317
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the lower median minus the minimum of every 2X2 subblock.at n=3A236319
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the lower median minus the minimum of every 2X2 subblock.at n=5A236319
• Numbers n = p * q, where n, p, and q together contain all 10 digits at least once.at n=22A253172
• a(n) = A213709(n) - A255071(n).at n=25A254119
• Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n^2-1, in order of increasing m.at n=34A256406
• Squarefree numbers n such that n^2 + 1 and n^2 - 1 are semiprime.at n=32A268697
• Number of 5-cycles in the n-triangular honeycomb obtuse knight graph.at n=32A290391
• Numbers that are not Keith numbers in any base.at n=39A320122
• Perimeters of more than one primitive 120-degree integer triangle.at n=21A350047
• a(1)=1; for n>1, a(n) = a(n-1) / k if there exists an unused positive integer k (choose the smallest) such that a(n) is a distinct positive integer; otherwise a(n) = a(n-1) * k if the same conditions apply.at n=53A371359
• Products of 5 distinct primes that are sandwiched between twin prime numbers.at n=17A376380