22529

Appears in sequences

• Numbers k such that 7*2^k - 1 is prime.at n=9A001771
• Cullen numbers: a(n) = n*2^n + 1.at n=11A002064
• Numbers that are the sum of 12 positive 11th powers.at n=11A004823
• a(0)=1, a(1)=1, a(n) = 3*a(n-1) + a(n-2) + 1.at n=9A033538
• Row 4 of array in A047666.at n=15A047668
• a(n) = 11*2^n + 1.at n=11A083683
• p*2^p + 1 where p is prime.at n=4A098773
• Numbers n such that p1=2n+3, p2=4n+5, p3=6n+7 and p4=8n+9 are all prime.at n=16A105653
• Where records appear in A109734.at n=38A109740
• a(n) = 2*a(n-1) - 1 for n>1, a(1)=23.at n=10A122041
• Half-indexed Fibonacci numbers a(n)=round(sqrt((1+sqrt(5))/2)^n/sqrt(5)) a(2n)=F(n)=A000045, so a(n)=F(n/2).at n=44A127217
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.at n=8A150323
• Generalized Fibonacci numbers Fib(n + 0.5) rounded to an integer.at n=22A158510
• a(n) = 22*n^2 + 1.at n=32A158537
• Dodecanacci numbers (12th-order Fibonacci sequence): a(n) = a(n-1) +...+ a(n-12) with a(0)=...=a(11)=1.at n=23A207539
• Smooth necklaces with 4 colors.at n=12A215329
• Cullen semiprimes: Semiprimes of the form k*2^k + 1.at n=6A242116
• Sum of the fifth largest parts in the partitions of n into 7 parts.at n=47A308929
• Expansion of Sum_{k>0} (x * (1 + (2 * x)^k))^k.at n=21A360752
• Integers of the form k*2^m + 1 where 0 < k <= m and k is odd.at n=40A361875