42101

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 3x + 8.at n=30A023279
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 11101-10111 pattern in any orientation.at n=13A147492
• 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, -1, 0), (0, 1, 0), (0, 1, 1), (1, 0, 1)}.at n=8A151045
• Primes where the first digit equals the sum of all the other digits.at n=29A156307
• Prime numbers ending in the prime number 101.at n=9A167626
• Primes of the form 100p + 1, where p is prime.at n=15A180469
• Primes p=prime(i) of level (1,4), i.e., such that A118534(i) = prime(i-4).at n=15A216177
• G.f. satisfies: A(x) = (1 + x*(1-x)*A(x)^2) * (1 + x^2*A(x)).at n=11A216617
• Number of integer compositions of n whose leaders of weakly increasing runs are themselves weakly increasing.at n=18A374635
• Prime numbersat n=4403