25689

Appears in sequences

• a(n) = 38*n^2 + 1.at n=26A158593
• Nonnegative numbers n such that 6*2^n-1 is prime.at n=34A164523
• Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.at n=3A207440
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.at n=39A207442
• Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.at n=5A207444
• Isolated deficient numbers that are divisible by 3.at n=39A273255
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n), where a(0) = 2, a(1) = 4, b(0) = 1, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A296276
• Shifts left by 2 places under series reversion.at n=12A309254
• Sequence shifts left nine places under Weigh transform with a(n) = signum(n) for n<9.at n=47A316081
• Numbers m such that 20*m + 1, 80*m + 1, 100*m + 1, and 200*m + 1 are all primes.at n=31A372186