18627

Appears in sequences

• Number of partitions of n that do not contain 10 as a part.at n=37A027344
• Least increasing sequence with a(1) = 1 and Hankel transform {1,1,1,1,...}.at n=7A055877
• Interprimes (A024675) which are of the form s*prime, s=21.at n=35A075296
• Let pi be an unrestricted partition of n with the summands written as binary numbers; a(n) is the number of such partitions with an even number of binary ones.at n=40A102425
• Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1).at n=51A137689
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 593", based on the 5-celled von Neumann neighborhood.at n=26A273121
• Numbers k such that k!4 + 2^6 is prime, where k!4 = k!!!! is the quadruple factorial number (A007662).at n=27A291347
• G.f. A(x) satisfies: A(x) = 1 + x^2 + x^3 * A(x/(1 - x)) / (1 - x).at n=14A346051
• Number of integer partitions of n that cannot be partitioned into a set (or multiset) of sets with distinct sums.at n=41A381990