25606

Appears in sequences

• a(n) = n*(7*n^2 - 1)/6.at n=28A004126
• a(n) = 2^(n-1)*(6*n-10)+6.at n=10A048499
• a(n+1) = a(n) converted to base 10 from base 16.at n=11A055987
• a(n) = Sum_{k=0..n} A109613(k)*A005843(n-k).at n=42A171218
• Numbers n such that 30n+{11, 13, 17, 19, 23} are 5 consecutive primes.at n=27A182279
• Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).at n=15A219033
• The number of binary pattern classes in the (2,n)-rectangular grid with 3 '1's and (2n-3) '0's: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other.at n=43A225972