23484

Appears in sequences

• Number of subsets of the first n primes whose sum is a prime.at n=16A071810
• 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, 1), (1, -1, 0), (1, 0, 1), (1, 1, -1)}.at n=8A149486
• Partial sums of A174928.at n=37A174929
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=17A192754
• Number of (n+3) X 9 0..2 matrices with each 4 X 4 subblock idempotent.at n=10A224726
• Numbers k such that k and k+1 each have at least 4 distinct prime factors.at n=39A321504