18802

Appears in sequences

• Number of nonnegative integer 5 X 5 matrices with sum of elements equal to n, under row and column permutations.at n=10A052367
• Number of partitions of n with even crank.at n=40A124227
• Indices of primes of the form 2^t*3^u + 1 in the primes.at n=34A174099
• Partial sums of A174928.at n=33A174929
• 1/16 the number of (n+1) X (n+1) 0..3 arrays with all 2 X 2 subblocks having the same four values.at n=10A184030
• Number of (w,x,y,z) with all terms in {1,...,n} and |x-y| = w + |y-z|.at n=34A212683
• Expansion of (psi(x) * phi(-x)^4)^2 in powers of x where phi(), psi() are Ramanujan theta functions.at n=25A215472
• Numbers k such that if x = sigma(k) + tau(k) - k then k = sigma(x) + tau(x) - x.at n=17A238226
• Expansion of x^5/(x^6-x^4-x^2-x+1).at n=24A245437
• Greater members of dihedral amicable pairs: numbers (m, k) such that t(m) = t(k) = m + k, where t(k) = sigma(k) + d(k).at n=3A322254
• G.f. satisfies A(x) = 1 + x*A(x) / (1 - x^3*A(x)^5).at n=12A365757
• Consecutive states of the linear congruential pseudo-random number generator 170*s mod 30323 when started at s=1.at n=32A385033