19858

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 47.at n=27A020386
• Composite numbers whose prime factors contain no digits other than 2 and 9.at n=41A036313
• Numbers whose concatenation of prime factors (with multiplicity) is a square.at n=38A038693
• Numbers n such that n and the four successive integers produce primes if substituted for x in the polynomial 5x^2+5x+1. See A090562, A090563. Terms show that longer similar chains also exist.at n=15A090100
• Sum of n-th prime squared and n-th perfect square.at n=32A106587
• 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, 0, 1), (-1, 1, 0), (0, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=8A149475
• Number of partitions of 60n into parts <= 6.at n=1A194197
• Number of partitions of 6n into 6 parts.at n=11A256226
• Number of partitions of 2n into exactly 6 parts.at n=33A256310
• Number of partitions of 3n into exactly 6 parts.at n=22A256315
• Number of partitions of 4n into at most 6 parts.at n=15A256540
• Numbers m such that A166133(m+1) = A166133(m)^2 - 1.at n=28A256703
• G.f.: Product_{m>0} 1/(1 - x^m + 2!*x^(2*m)).at n=31A293294
• Number of partitions of n into divisors of n that are at most sqrt(n).at n=60A327642
• Number of partitions of n into divisors of n that are smaller than sqrt(n).at n=60A357311