27087

Appears in sequences

• Indices of prime values of heptanacci-Lucas numbers A104621.at n=38A104622
• Number of zero-sum -7..7 arrays of n elements with first through fourth differences also in -7..7.at n=6A201438
• Number of zero-sum -n..n arrays of 7 elements with first through fourth differences also in -n..n.at n=6A201442
• Euler transform of period 5 sequence [ 2, 1, 1, 2, 1, ...].at n=26A205183
• Integers n such that 2n^2+1, 2n^3+1 and 2n^4+1 are prime.at n=24A239920
• Number of distinguishable configurations of the nearest larger value problem on an array of size n, using tiebreaking rule I: ties are broken by using the value to the right.at n=11A293346